I tried it just to make sure and my vote was only counted once. I also gave the Cobalt a "Rubbish" 0 vote because he deserves it. I think a lot of people will do the same thanks to his Lambo doors. The GTO got a 1 vote because he named his car Betty. So far it looks like you have about 50 more votes than the Cobalt with .8 more points on average.
I was thinking about posting this on my facebook for more votes if the results start getting closer. Do you mind if I do that?