While watching TV, I have one of the famous SPEEDEEZ cars on my desk and I was pushing it back and forth... er... observing it's inertia ... yeah... I was NOT playing with a toy... I was experimenting... yeah, that's it! Anyway... Pushing it at an angle, I would notice that it would straighten itself out... That gave me an idea! I went to the kitchen, and grabbed the strongest fridge magnet I had (It's pretty strong) and also using a thin plywood, placed the car on top with the magnet on the bottom.... Then moving the magnet in circles or random patterns... what happens? A little SPEEDEEZ racing around and - YES! - making turns!!! I couldn't believe my eyes! So an idea comes to mind... several magnets on a rotating disc or better yet, some sort of belt system? tied to a motor... I Think you see where this could go.