Glad to see your enthusiasm, we used quite simple gear and set-up.
I was using my Canon 30D, with 70-200/300/10-22/17-35mm lenses. They are all L glass except the wide angle ones. I was in the back of my Ford Lightning shooting the car while a friend drove for me (around Red Rock canyon outside of Las Vegas), i did some static wide angle shots at the vista point, then we did some rolling shots on the freeway (again, with me in the bed of the truck).
Oh, we did some rig shots too but only one or two of those since the car needed to be in Pahrump for the writer to evaluate it on the road course (35 miles away).