There is such a car. It's totally electric, has heat and AC, and I ride it to work every day. It's called, fancifully enough, a "subway car". The best part is, I don't even need to drive it! I get chauffeured!
(I'm being a bit snarky here, but "moving away from cars" does not have to mean "moving into a different car". Public transit scales very well, even in places without insane population densities.)