Suffolk County police say it's unclear why Christopher Wilson abruptly left or tumbled out of his Chevrolet Blazer around 1 p.m. Saturday on the eastbound side of the Long Island Expressway. He landed on the roadway just west of Exit 51 in Dix Hills but managed to escape being hit by any cars.
Police say the driverless SUV kept going for about another quarter-mile before slamming into a light post, veering onto the grass by the highway and hitting a couple of trees.
The 40-year-old Wilson was flown to Stony Brook University Hospital in serious condition. He's from Huntington Station.
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