http://www.carlaws.com/
Seriously though I do believe that it has to go in for repair at the dealer multiple time for the same problem, not multiple times for a multiple problems. My girlfriend's brother in law Lemon lawed his Sebring, there was nothing wrong with the car, he just kept unplugging something on the harness, they finally figured out what he was doing and siliconed over the connection so he couldn't unplug it anymore, but by the time they did that it had already been the three times and it was lemon lawed. They took the car back and gave him a full refund for the Black Book Value of the car, he took that money and got a CTS.
Check that link i posted, I do believe they give you a full refund and you can go get a car from somewhere else. As far as what happens to the car, it is fixed and sold as used, but the carfax on it will say it was lemon lawed, so you'll just be passing the problems off onto someone else.
I would also like to add that if you Lemon Law a car the word spreads and you kind of become a Pariah to local dealerships, so don't expect anyone to be friendly when you walk in the door looking for a replacement vehicle.