Walk into a car showroom tomorrow and you could buy a vehicle that parks itself, or one that warns you if you're about to crash. You could find one with a display that shows you the road ahead despite the thickest fog. Next year there could even be a car you can drive into the sea and race through the waves like a speedboat. So why can't you buy a car that can go 100 miles on a gallon of fuel? There is certainly no shortage of people who would jump at the chance to own one: according to a recent poll, almost two-thirds of Americans would love a car with this kind of thriftiness.
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