After our meeting on the roof of the airport car-park I was continually aware of Vaughan's presence. He no longer followed me, but seemed to hover like an invigilator in the margins of my life, for ever monitoring my head. Along the high-speed lanes of Western Avenue I watched the rear-view mirror, and scanned the parapets of overpasses and multi-storey car-parks.

In a sense I had already enlisted Vaughan in my confused hunt. I sat in the crowded traffic lanes of the flyover, the aluminium walls of the airline coaches shutting off the sky. As I watched the packed concrete decks of the motorway from our veranda while Catherine prepared our first evening drinks, I was convinced that the key to this immense metallized landscape lay somewhere within these constant and unchanging traffic patterns.

Luckily, my messianic obsessions soon made themselves evident to Paul Waring, my partner. He arranged with Catherine to restrict my visits to the studio offices to an hour a day. Easily tired and excited, I had an absurd row with Waring's secretary. But all this seemed trivial and unreal. Far more important was the delivery of my new car from the local distributors.

Catherine regarded with profound suspicion my choice of the same make and model as the car in which I had crashed. I had even selected the same make of wing mirror and mudguard spat. She and her secretary watched me critically from the forecourt of the airfreight offices. Karen stood behind Catherine, a cocked elbow almost touching her shoulder blade, like a young and ambitious madame keeping a protective eye on her latest discovery.

'Why did you ask us here?' Catherine said. 'I don't think either of us ever wants to look at a car again.'

'Certainly not this one, Mrs Ballard.'

'Is Vaughan following you?' I asked Catherine. 'You spoke to him at the hospital.'

'He said he was a police photographer. What does he want?'

Karen's eyes gazed at my scarred scalp. 'It's hard to believe he was ever on television.'

I outstared Karen with an effort. She watched me like a predatory animal behind the silver bars of her mouth.

'Did anyone see him at the accident?'

'I've no idea. Are you planning to have another crash for him?' Catherine sauntered around the car. She settled herself in the front passenger seat, savouring the sharp tang of salesroom vinyl.

'I'm not thinking about the crash at all.'

'You're getting involved with this man, Vaughan -you're talking about him all the time.' Catherine stared through the immaculate windshield, her thighs held open in a formalized posture.

I was thinking, in fact, about the contrast between this generous pose and the glass curtain-walling of the airport buildings, the showroom glitter of the new car. Sitting here in the exact replica of the vehicle in which I had nearly killed myself, I visualized the crushed fenders and radiator grille, the precise deformation of the hood trim, the angular displacement of the windshield pillars. The triangle of Catherine's pubis reminded me that the first sexual act within the car had yet to take place.

At the Northolt police pound I showed my pass to the guard, custodian of this museum of wrecks. I hesitated there, like a husband collecting his wife from the depot of a strange and perverse dream. Some twenty or so crashed vehicles were parked in the sunlight against the rear wall of an abandoned cinema. At the far end of the asphalt yard was a truck whose entire driving cabin had been crushed, as if the dimensions of space had abruptly contracted around the body of the driver.

Unnerved by these deformations, I moved from one car to the next. The first vehicle, a blue taxi, had been struck at the point of its near-side headlamp – on one side the bodywork was intact, on the other the front wheel had been forced back into the passenger compartment. Next to it was a white saloon which had been run over by an enormous vehicle. The marks of giant tyres ran across its crushed roof, forcing it down to the transmission hump between the seats.

I recognized my own car. The remains of towing tackle were attached to the front bumper, and the body panels were splashed with oil and dirt. I peered through the windows into the cabin, running my hand over the mud-stained glass. Without thinking, I knelt in front of the car and stared at the crushed fenders and radiator grille.

For several minutes I gazed at this wrecked car, reassembling its identity. Terrifying events rolled through my mind on its flattened wheels. What most surprised me was the extent of the damage. During the accident the hood had climbed over the engine compartment, hiding from me the real extent of the collision. Both front wheels and the engine had been driven back into the driver's section, bowing the floor. Blood still marked the bonnet, streamers of black lace running towards the windshield wiper gutters. Minute flecks were spattered across the seat and steering wheel. I thought of the dead man lying on the hood of the car. The blood rilling across the bruised cellulose was a more potent fluid than the semen cooling in his testicles.

Two policemen crossed the yard with a black Alsatian dog. They watched me hovering around my car as if they vaguely resented my touching it. When they had gone I unlatched the driver's door, and with an effort pulled it open.

I eased myself on to the dusty vinyl seat, tipped back by the bowing of the floor. The steering column had reared forward six inches towards my chest. I lifted my nervous legs into the car and placed my feet on the rubber cleats of the pedals, which had been forced out of the engine compartment so that my knees were pressed against my chest. In front of me the instrument panel had been buckled inwards, cracking the clock and speedometer dials. Sitting here in this deformed cabin, rilled with dust and damp carpeting, I tried to visualize myself at the moment of collision, the failure of the technical relationship between my own body, the assumptions of the skin, and the engineering structure which supported it. I remembered visiting the Imperial War Museum with a close friend, and the pathos that surrounded the cockpit segment of a World War II Japanese Zero fighter aircraft. The clutter of electrical wiring and torn canvas webbing on the floor expressed all the isolation of war. The blurring perspex of the cockpit canopy contained a small segment of the Pacific sky, the roar of air-, craft warming up on a carrier deck thirty years before.

I watched the two policemen exercising their dog across the yard. I opened the dashboard locker and forced the shelf downwards. Inside, covered with dirt and flaked plastic, were several items Catherine had been unable to reclaim: a set of route maps, a mild pornographic novel which Renata had lent me as a brave joke, a polaroid photograph I had taken of her sitting in the car near the water reservoirs with her left breast exposed.

I pulled back the ashtray. The metal tray jumped on to my lap, releasing a dozen lipstick-smeared butts. Each of these cigarettes, smoked by Renata as we drove from the office to her flat, reminded me of one of the sexual acts that had taken place between us. Looking down at this small museum of excitement and possibility, I realized that the crushed cabin of my car, like some bizarre vehicle modified for an extreme cripple, was the perfect module for all the quickening futures of my life.

Someone passed in front of the car. A policeman's voice called from the gatehouse. Through the windshield I saw a woman in a white raincoat walking along the line of wrecked cars. The appearance in this drab yard of an attractive woman, moving from one car to the next like an intelligent gallery visitor, roused me from this reverie upon twelve cigarette ends. The woman approached the car next to mine, a crushed convertible involved in a massive rear-end collision. Her intelligent face, that of an overworked doctor, broad forehead disguised by a lowered hairline, gazed down at the vanished passenger compartment.

Without thinking, I started to climb from my car, then sat quietly behind the steering wheel. Helen Remington turned from the crashed convertible. She glanced at the bonnet of my car, clearly not recognizing the vehicle which had killed her husband. As she raised her head she saw me through the empty windshield, sitting behind the deformed steering wheel among the dried bloodstains of her husband. Her strong eyes barely changed their focus, but one hand rose involuntarily to her cheek. She took in the damage to my car, her attention moving from the impacted radiator grille to the high-rising steering wheel in my hands. Then she began a brief scrutiny of myself, inspecting me with a tolerant eye like a doctor faced with a difficult patient suffering from a set of largely self-indulgent symptoms.

She moved away towards the damaged truck. What struck me again was her unusual leg-stance, the inner surface of her thighs, set in a broad pelvis, turned outwards as if exposed to the line of crashed vehicles. Had she been waiting for me to visit the police pound? I knew that some kind of confrontation between us was inevitable, but in my mind this was already overlaid by other feelings – pity, eroticism, even a strange jealousy of the dead man, whom she but not I had known.

She came back as I waited on the oil-stained asphalt in front of my car.

She pointed to the damaged vehicles. 'After this sort of thing, how do people manage to look at a car, let alone drive one?' When I made no reply she said flatly, 'I'm trying to find Charles's car.'

'It's not here. Perhaps the police are still holding it. Their forensic people…'

'They said it was here. They told me this morning.' She peered critically at my car, as if puzzled by its distorted geometry, and then finding this confirmed in my own bent of character. 'This is your car?'

She reached out a gloved hand and touched the radiator grille, feeling a torn chrome pillar from the accordion, as if searching for some trace of her husband's presence among the blood-spattered paintwork. I had never spoken to this tired woman, and felt that I should launch into a formal apology for her husband's death and the appalling act of violence which had involved us. At the same time, her gloved hand on the scarred chrome aroused a feeling of sharp sexual excitement.

'You'll tear your gloves.' I moved her hand away from the grille. 'I don't think we should have come here – I'm surprised the police don't make it more difficult.'

Her strong wrist pressed back against my fingers, out of a kind of wayward irritation, as if she were rehearsing her physical revenge against me. Her eyes lingered on the black confetti scattered across the bonnet and seats.