There's a thread for discussing what alt modes you'd like to see here Also, I believe that Deepdive has the most realistic looking submarine mode. But I agree that we need more of them. And we absolutely need taxis and buses; that's something that's never been done. Until then we always have Paulbot's Cabcharge.

Ya know there's something that I want back that doesn't need much improvement on - RUB SIGNS. Can I get an a-men?