Actually a car that is driven frequently holds up better than a car that is only driven every now and then, and is left outside for the rest of the time. Cars in almost-constant use will also be taken care of better, and automatically; for example, they will be driven through a car wash automatically regularly, and the automatic oil monitoring system will replace said oil at a machine during 15 minutes somewhere at a point where the demand is lowest. Maybe we'd be burning the car 2 times faster, I don't know exact numbers - but it surely won't be 20 times, and for any multiplier lower than those 20, we come out ahead.