I'd have completely missed this game if not for Classic Game Room on Youtube, and I'm glad I didn't, I'm having a blast with this game. I love the black and white grindhouse art style, it makes a good impression especially since the car combat genre has been lacking lately. Also love how many cars there are to unlock, in contrast to something like, say, Twisted Metal which had like 10 different cars (I know most of the cars in Mayhem are basically the same but I appreciate the variety.
Mayhem gets my vote for most underrated game of 2011 so far! --- That's one of my rules.