I’m sure it’s just because I’ve never owned one, but I have often thought horses were the first “self driving” vehicle, and could still have some features superior to automobiles. You can feed them hay, they occasional apple and sugar cube, and they are largely carbon neutral. Even producing natural fertilizer as a byproduct of combustion. Built in cruise control, obstacle avoidance, and voice control, and a limited ability to self navigate and self-park.