Tips on Buying Cars: cancelling new car purchased 10.25.08, reputable dealer, agreement states

Question
hello,i purchaseda new car last evening 10.25.08, although the salesman was nice and not the typical "pushy" type, i had wanted to think about the purchase over nite as i shared, naturally the haggling began, the manager was introduced etc....i want to cancel the deal, take the car back and get my old car back. I haved a decent paying job in the state of FLorida (70K) however i am very unhappy at work to the extent it is affecting my health. i am starting the jump hunt and know i will take a huge cut in pay, and this car will be a bit to manage....i told the dealer this is why i wanted to think about it, the new car is sitting in my garage and i am having chest pain over thought of being chained to a job i dislike....stupid move last nite obviously...the contract (financial loan agreement) states there is no cooling off period-am I stuck??? help please,,,thank you!!!
Lisa

Answer
Lisa,
Just would like to know if the dealer took the car back?
Shari