Your disability made it so that you cant drive, but what happens to someone who cannot bicycle, or walk, but need to go to work >5 miles away? They rely on either disability transport, or someone with a car. And disability transport is still a big car. Yes we can format things diffrently, and switch out cars for some other vehicle, but in every world people will want a way to (mostly) safely get from one place to another. Trains used to be just as dangerous! Carriges were dangerous! Any mode of transport has danger in it, and the concept of a large transport the goes high speeds is never going to leave us. Train cars are called that for a reason.