From a junkyard they had obtained a battered air lift, smashed almost beyond use in the crackup of a ten-thousand dollar sports cruiser. The kids pried, pounded and bent the twisted impeller lift blades back into some semblance of alignment. From another wreck of a cargo carrier came a pair of 4000-pound thrust engines. They had jury-rigged the entire mess so that it stuck together on the old heap. Then they hit the thruway--nine of them packed into the jalopy--the oldest one just seventeen years old. They were doing three hundred fifty when they flashed past the patrol car and Ben had roared off in pursuit. The senior officer whipped the big patrol car across the crowded high speed blue lane, jockeyed into the ultra-high yellow and then turned on the power. [Illustration] By this time the kids realized they had been spotted and they cranked their makeshift power plant up to the last notch. The most they could get out of it was four hundred and it was doing just that as Car 56, clocking better than five hundred, pulled in behind them. The patrol car was still three hundred yards astern when one of the bent and re-bent impeller blades let go. The out-of-balance fan, turning at close to 35,000 rpm, flew to pieces and the air cushion vanished. At four hundred miles an hour, the body of the old jalopy fell the twelve inches to the pavement and both front wheels caved under. There was a momentary shower of sparks, then the entire vehicle snapped cartwheeling more than eighty feet into the air and exploded. Pieces of car and bodies were scattered for a mile down the thruway and the only whole, identifiable human bodies were those of the three youngsters thrown out and sent hurtling to their deaths more than two hundred feet away. Clay's mind snapped back to the present. "Write 'em up," he said quietly to Martin. The senior officer gave a Satisfied nod and turned back to his citation pad. * * * * * At marker 412, which was also the Columbus turnoff, a big patrol wrecker was parked on the side strip, engines idling, service and warning lights blinking. Clay pulled the patrol car alongside and stopped. He disconnected the tow bar and the two officers climbed out into the cold night air. They walked back to the teenager's car. Clay went to the rear of the disabled car and unhooked the warning light while Martin went to the driver's window. He had his citation book in hand. The youngster in the driver's seat went white at the sight of the violation pad. "May I see your license, please," Ben asked. The boy fumbled in a back pocket and then produced a thin, metallic tab with his name, age, address and license number etched into the indestructible and unalterable metal. "Also your car registration," Ben added. The youth unclipped similar metal strip from the dashboard.