Sure, a lot of driving is done near home. But if trips outside that range were really negligible, gas tanks wouldn't be a standard feature in those cars. They'r

Sure, a lot of driving is done near home. But if trips outside that range were really negligible, gas tanks wouldn't be a standard feature in those cars. They're not including them just for funsies. As an aside, I think you're slightly misunderstanding that statistic. If I do a 60-mile round trip directly away from my house and back, 66% of those miles are within 20 miles of home even though the trip isn't anywhere near 20 miles in total. If I drive 15 miles away from my house and then drive a a semi-circle for 80 miles, all of those are within 20 miles of home.