Thinking of Vaughan now, drowning in his own blood under the police arc-lights, I remember the countless imaginary disasters he described as we cruised together along die airport expressways. He dreamed of ambassadorial limousines crashing into jack-knifing butane tankers, of taxis filled with celebrating children colliding head-on below the bright display windows of deserted supermarkets. He dreamed of alienated brothers and sisters, by chance meeting each other on collision courses on the access roads of petrochemical plants, their unconscious incest made explicit in this colliding metal, in the haemorrhages of their brain tissue flowering beneath the aluminized compression chambers and reaction vessels. Vaughan devised the massive rear-end collisions of sworn enemies, hate-deaths celebrated in the engine fuel burning in wayside ditches, paintwork boiling through the dull afternoon sunlight of provincial towns. He visualized the specialized crashes of escaping criminals, of off-duty hotel receptionists trapped between their steering wheels and the laps of their lovers whom they were masturbating. He thought of the crashes of honeymoon couples, seated together after their impacts with the rear suspension units of runaway sugar-tankers. He thought of the crashes of automobile stylists, the most abstract of all possible deaths, wounded in their cars with promiscuous laboratory technicians.

Vaughan elaborated endless variations on these collisions, thinking first of a repetition of head-on collisions: a child-molester and an overworked doctor re-enacting their deaths first in head-on collision and then in roll-over; the retired prostitute crashing into a concrete motorway parapet, her overweight body propelled through the fractured windshield, menopausal loins torn on the chromium bonnet mascot. Her blood would cross the over-white concrete of the evening embankment, haunting for ever the mind of a police mechanic who carried the pieces of her body in a yellow plastic shroud. Alternatively, Vaughan saw her hit by a reversing truck in a motorway fuelling area, crushed against the nearside door of her car as she bent down to loosen her right shoe, the contours of her body buried within the bloody mould of the door panel. He saw her hurtling through the rails of the flyover and dying as Vaughan himself would later die, plunging through the roof of an airline coach, its cargo of complacent destinations multiplied by the death of this myopic middle-aged woman. He saw her hit by a speeding taxi as she stepped out of her car to relieve herself in a wayside latrine, her body whirled a hundred feet away in a spray of urine and blood.

I think now of the other crashes we visualized, absurd deaths of the wounded, maimed and distraught. I think of the crashes of psychopaths, implausible accidents carried out with venom and self-disgust, vicious multiple collisions contrived in stolen cars on evening freeways among tired office-workers. I think of the absurd crashes of neurasthenic housewives returning from their VD clinics, hitting parked cars in suburban high streets. I think of the crashes of excited schizophrenics colliding head-on into stalled laundry vans in one-way streets; of manic-depressives crushed while making pointless litmus on motorway access roads; of luckless paranoids driving at full speed into the brick walls at the ends of known culs-de-sac; of sadistic charge nurses decapitated in inverted crashes on complex interchanges; of lesbian supermarket manageresses burning to death in the collapsed frames of their midget cars before the stoical eyes of middle-aged firemen; of autistic children crushed in rear-end collisions, their eyes less wounded in death; of buses filled with mental defectives drowning together stoically in roadside industrial canals.

Long before Vaughan died I had begun to think of my own death. With whom would I die, and in what role – psychopath, neurasthenic, absconding criminal? Vaughan dreamed endlessly of the deaths of the famous, inventing imaginary crashes for them. Around the deaths of James Dean and Albert Camus, Jayne Mansfield and John Kennedy he had woven elaborate fantasies. His imagination was a target gallery of screen actresses, politicians, business tycoons and television executives. Vaughan followed them everywhere with his camera, zoom lens watching from the observation platform of the Oceanic Terminal at the airport, from hotel mezzanine balconies and studio car-parks. For each of them Vaughan devised an optimum auto-death. Onassis and his wife would die in a recreation of the Dealey Plaza assassination. He saw Reagan in a complex rear-end collision, dying a stylized death that expressed Vaughan's obsession with Reagan's genital organs, like his obsession with the exquisite transits of the screen actress's pubis across the vinyl seat covers of hired limousines.

After his last attempt to kill my wife Catherine, I knew that Vaughan had retired finally into his own skull. In this overlit realm ruled by violence and technology he was now driving for ever at a hundred miles an hour along an empty motorway, past deserted filling stations on the edges of wide fields, waiting for a single oncoming car. In his mind Vaughan saw the whole world dying in a simultaneous automobile disaster, millions of vehicles hurled together in a terminal congress of spurting loins and engine coolant.

I remember my first minor collision in a deserted hotel car-park. Disturbed by a police patrol, we had forced ourselves through a hurried sex-act. Reversing out of the park, I struck an unmarked tree. Catherine vomited over my seat. This pool of vomit with its clots of blood like liquid rubies, as viscous and discreet as everything produced by Catherine, still contains for me the essence of the erotic delirium of the car-crash, more exciting than her own rectal and vaginal mucus, as refined as the excrement of a fairy queen, or the minuscule globes of liquid that formed beside the bubbles of her contact lenses. In this magic pool, lifting from her throat like a rare discharge of fluid from the mouth of a remote and mysterious shrine, I saw my own reflection, a mirror of blood, semen and vomit, distilled from a mouth whose contours only a few minutes before had drawn steadily against my penis.

Now that Vaughan has died, we will leave with the others who gathered around him, like a crowd drawn to an injured cripple whose deformed postures reveal the secret formulas of their minds and lives. All of us who knew Vaughan accept the perverse eroticism of the car-crash, as painful as the drawing of an exposed organ through the aperture of a surgical wound. I have watched copulating couples moving along darkened freeways at night, men and women on the verge of orgasm, their cars speeding in a series of inviting trajectories towards the flashing headlamps of the oncoming traffic stream. Young men alone behind the wheels of their first cars, near-wrecks picked up in scrap-yards, masturbate as they move on worn tyres to aimless destinations. After a near collision at a traffic intersection semen jolts across a cracked speedometer dial. Later, the dried residues of that same semen are brushed by the lacquered hair of the first young woman who lies across his lap with her mouth over his penis, one hand on the wheel hurtling the car through the darkness towards a multi-level interchange, the swerving brakes drawing the semen from him as he grazes the tailgate of an articulated truck loaded with colour television sets, his left hand vibrating her clitoris towards orgasm as the headlamps of the truck flare warningly in his rear-view mirror. Later still, he watches as a friend takes a teenage girl in the rear seat. Greasy mechanic's hands expose her buttocks to the advertisement hoardings that hurl past them. The wet highways flash by in the glare of headlamps and the scream of brake-pads. The shaft of his penis glistens above the girl as he strikes at the frayed plastic roof of the car, marking the yellow fabric with his smegma. The last ambulance had left. An hour earlier the film actress had been steered towards her limousine. In the evening light the white concrete of the collision corridor below the flyover resembled a secret airstrip from which mysterious machines would take off into a metallized sky. Vaughan's glass aeroplane flew somewhere above the heads of the bored spectators moving back to their cars, above the tired policemen gathering together the crushed suitcases and handbags of the airline tourists. I thought of Vaughan's body, colder now, its rectal temperature following the same downward gradients as those of the other victims of the crash. Across the night air these gradients fell like streamers from the office towers and apartment houses of the city, and from the warm mucosa of the film actress in her hotel suite.

I drove back towards the airport. The lights along Western Avenue illuminated the speeding cars, moving together towards their celebration of wounds.