Well since I won the car in the final round, they give me an extra $5000 to pay for the taxes and fees, which is nice. If I had won it in a normal round and not bonus, I'd get no tax bonus.
As for how much I'm actually getting, I don't know yet, I don't get anything until April. I imagine that I will get the full amount and then I will just have to pay the taxes myself once I get my 1099 or whatever the tax form is at the beginning of 2014. So I will just save part of my earnings to account for that.