Originally Posted by
tandempower
That's not a bad argument for cars, but who is going to stop an entire bus to rob it?
It would also be a "good argument" for any would-be robber who gets on board when and where it stops to pick up passengers. Or will your imaginary self driving buses on tracks pick up and discharge its passengers without stopping?
A more realistic scheme than the doozy proposed on this thread would be transporting passengers on self driving flying pigs powered by pixie dust.