Driving miles anywhere costs the same. Compared to the annual cost of owning a car making an extra 15 mile trip is absolute peanuts. The problem occurs when 100

Driving miles anywhere costs the same. Compared to the annual cost of owning a car making an extra 15 mile trip is absolute peanuts. The problem occurs when 1000 people decide to make that very extra trip just because capacity makes it possible and it's otherwise free to use.