I built a few new cars that are on my web page. a few pretty decent 1/8 scales and a dirt omega.
the one 1/8 scle i got 11 laps in 5 min on the dirtbowl. the Omega dirt is cool running on the dirtbowl with the track hight at 0.1 its like a dirt onroad track or somthing its fun.
i uploaded a few of them to my site if anyone is interested