There already exist parking spaces that are for extra-small cars (like Smart cars) only. These will often be cheaper than alternate parking, or at least much m

There already exist parking spaces that are for extra-small cars (like Smart cars) only. These will often be cheaper than alternate parking, or at least much more convenient. It's basically the exact same thing - a parking advantage offered because a feature of the car allows for it. In one case, size; in the other, automation.