So what are some good ones aside from the real racing series? Also, I remember an iPad only game that was a top down racing game in the vein of super sprint but had all kinds of weapons and combat racing, and I don't think it was Death Rally, which I already have. For the life of me I can't remember what it was. I just remember not having an iPad yet, and wanting to try it, but I can't find anything about it now.
For future reference, please ask questions like this in the general discussions forum. Try Scrap Metal, it's pretty fun. Also there's an older iPhone game called Horror Racing that has weapons and combat.
There's one big big thread where people can ask this type of question: http://forums.toucharcade.com/showthread.php?t=23990 This is where you can ask for game recommendations & people tend to reply pretty quickly. Some of the guys in that thread know about heaps of games.