Saturday bus

Soon, when there will probably be mostly autonomous cars, there will probably also be such buses (I heard in passing that there are already such buses or taxis in Japan or China or something)
Do you see a reason to ban a Shabbat bus that stops at every stop and certain systems are turned off, etc.?
Of course, as weight increases, energy consumption increases slightly.

Maybe you could just ask this about a non-Jewish driver on the light rail (non-Jewish people also enjoy it), of course, provided that he stops at empty stations as well.