I'm sure this has been brought up many times before, but... For those U.S. citizens that are having having problems with the fuel pump (or any mechanical problem) - take the time to document your contacts with the dealer. You would need this info to take any action under the Lemon Law (different for each state). If they won't/can't fix the problem, eventually, the dealer must legally provide you with a replacement car or buy back your car.
http://dealerselect.com/lemon/lemonbystate.html