AIR for Android, a Phidgets motor control, a slot car set, and a custom built LEGO housing for good measure -- if this project isn't meant for Engadget, we don't know what is! The premise is pretty straightforward: Grant Skinner uses his Nexus One to send accelerometer data to a desktop PC, which then sends it to a motor controller. In turn, the controller tells the cars how fast to go. Tilt forward a little bit, and the car accelerates a little bit. Lean forward a lot, and it picks up speed. Sure beats those cheesy plastic trigge