Having fun with some ICONs

I woke up this morning  and I wanted to play around with some designs for an iPad/iPhone in case I am so inspired in the feature to create one. I created these to see what they might look like. Now all I need is an idea for Hot Rodders and an Application. Maybe it is hooked up to a weather reporting system that will give the barometric pressure and temps and dew points. It would be great for racers. Well what ever i come up with the icon / logo part has been started.

What do you think? Would this look good on your iPhone?

Should it have a hot rod in there instead or a race motor?

I could always put Olly Octane in there!... :)