I want this app, but nobody has made it yet! An app that uses the accelerometer and reorded RAce car sounds to make my car sound like a Ferrari F1 car when I plug it into my car radio. I got the idea while using the Gtach app to record my 0-60 on my vintage sports car. Why not use the same technology to simulate race car sounds to your car radio and make a trip to the store more like an F1 race. Develop an app that can simulate all kinds of engines! I would pay for that. I posted my idea 2days ago on another forum but have only had a few views. Where else should I post to get the wheels rolling on this? I needed this app like 2 days ago. I'm not very patient. Sorry about the messed up title.