That car sponsership.com is crap. They have been trying to reach me for a while and i brush it off. I had a friend in wisconsin do it. and he was all psyched I told him to stay away but he did it and all he got was vinyl stickers and maybe graphics and some other crap it was way way waste of money. The way I got my sponsors was the old fashion way.
Rendering + Proposal + progress and something diffrent = sponsorships
I have got rather lucky over the years with mine.
Oh heres my old yota by the way