Looking for something special !

My friends and I have our own racing contest about 2-3 times a year. It is made up of a few different events, and we have yearly trophies.

I'm the guy that is always looking to win using something crazy. Last year I was able to procure a double sided car that would roll on both sides.

This year I need something even better. I need a RC car small enough to fit on a track. Does anyone know if those hot wheels stealth rides fit on the track? Or is there another model that I could find online somewhere that is small enough?

Thanks.