These videos have been around ages, but no one over here as attempted anything like that. Then again no one runs rally cars on our off road tracks either.
Rally cars work well on astro tracks, I've done a bit of that in the past.
http://www.tamiyaclubmovies.com/movi...1NO860QIK7.wmv
Minis work well as well
http://www.tamiyaclubmovies.com/movi...6XAE8Q98M4.wmv