I WAS STOPPED AT A TRAFFIC LIGHT ON A SLIGHT UPHILL GRADE WHEN THE CAR'S ENGINE SUDDENLY STARTED TO RACE. THE CAR SURGED FORWARD BEFORE I COULD BRAKE AND HIT THE CAR IN FRONT OF ME. I HAD TO PRACTICALLY STAND ON THE BRAKE TO STOP IT. FORTUNATELY THERE WAS NO DAMAGE AND EVEN MORE FORTUNATELY THERE WASN'T A PEDESTRIAN CROSSING IN FRONT OF ME. THE TEMPERATURE THAT AFTERNOON WAS 98 DEGREES WHICH, I UNDERSTAND FROM THE VW FORUMS IS RELEVANT. OTHER PEOPLE HAVE EXPERIENCED THIS PROBLEM IN VERY HOT TEMPERATURES AS WELL. THIS HAS HAPPENED TO ME ONCE BEFORE BUT I ALREADY HAD MY FOOT ON THE BRAKE AND ONLY HAD TO STAND ON IT TO RESTRAIN THE CAR. *JB