A decade ago, when my wife’s weathered Nissan was nearing the end of its natural life, we joked about setting the car free on the highway to find its way from Washington to North Carolina a route it followed countless times when we were interstate daters. A couple of years of that commute inspired a lot of musing about computerized cars that could drive themselves but alert the occupants when they needed to resume control and exit for gas. And, of course, these cars would know where the gas stations were and which had the best prices.
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