New games?

[Arkhan]

whats a 45 degree spr RPG?

you mean like, Isometric?

[Arkhan]

I think yes, the most advanced engine is skulltag (source port), that support all id Tech 1 games. (And even public multiplayer of doom, heretic, hexen, strife, chex and etc).
Uses OpenGL, i think it possible to recreate car game. I have seen more difficult/complex projects =)

man how about a car game where you drive around and shoot demons.

you could call it VROOM.