I heard about this on the radio this morn.  Monster Truck Destruction 

The guys developing it live in my area which was a nice surprise.   It's currently in Beta and is being made for iOS(iphones etc..), Andriod and Facebook.

I've had a real quik go on the beta and had quite a bit of fun with it. 

The driving model is pretty good and I like the fact you can break up the other props on the course!  I'm looking forward to trying the beta on my main rig to see it with better gfx n smoother gameplay(the work laptop doesn't run it too well) and then will give'em some feedback on their forums. 

I think this game will be pretty good on an iPhone/Andriod phone, so I look forward to seeing future progress on this...and checking it out on my iTouch!

FaceBook page!

Tha vid below is from an older Beta: