8/13/11 CAR STALLED TWICE WHILE DRIVING- ONCE ON MAJOR HIGHWAY. CAR TOWED FROM RESIDENCE TO SERVICE. 8/15/11 SERVICE CALLED AND ADVISED MY CAR WAS HOOKED UP TO DIAGNOSTICS AND FOUND THE FUEL INJECTION PUMP WAS LOW AND GAS TANK SO IT WAS PROBABLY BAD GAS BUT THE CAR HAD NOTHING WRONG. I WAS ALSO ADVISE THAT THE CAR WAS TAKEN FOR A TEST DRIVE, 10 MILES AND NOTHING HAPPENED. SERVICE OFFERED TO KEEP CAR 8/16/11 AND DRIVE IT ANOTHER 20-30 MILES. I AGREED. 8/17/11 I SPOKE WITH SERVICE MANAGER, UPON ARRIVAL. SVC ADVISED THAT THE CAR WAS DRIVEN AGAIN FOR 20 OR SO MILES AND AGAIN NO ISSUES WERE FOUND. SHE AGAIN STATED IT WAS "JUST PROBABLY BAD GAS". I ASKED IF THERE WAS A POSSIBILITY OF IT STALLING AGAIN AT WHICH TIME ADVISED IT MAY HAPPEN AGAIN HOWEVER SINCE THEY THOUGHT IT WAS BAD GAS TO JUST RUN THE CURRENT TANK (3/4 FULL) DOWN TO EMPTY. ON 8/18/11, I WAS DRIVING HOME ON THE GSP NORTH IN NJ DURING RUSH HOUR TRAFFIC (8 LANE HIGHWAY). TRAVELING IN THE 4TH LEFT LANE, SLOWED THE VEHICLE DUE TO TRAFFIC. AS I SLOWED DOWN MY CAR STALLED. I WAS ABLE TO RESTART AND MOVE ABOUT 5 FEET WHEN THE CAR STALLED AGAIN. AT THIS POINT I WAS UNABLE TO START THE CAR AGAIN. I PRESSED AND KEPT MY FOOT ON THE BRAKE WHILE KEEPING THE HAZARDS ON. I DID THIS TO NOTIFY DRIVERS BEHIND ME THAT I WAS STUCK. TRAFFIC STARTED TO MOVE AGAIN AT A SLOW PACE AND DRIVERS WERE GOING AROUND ME. WITHIN A MINUTE OR SO, TRAFFIC ON BOTH SIDES OF MY CAR WERE GAINING MOMENTUM AND MOVING AT LEAST SPEED LIMI