Pontiac

I was stopped behind a car today when my car tried to lurch forward, my foot was also already on the brake and in drive. it was as if the car had a mind of it is own. what could be the problem? it is an automatic

Depending on weather conditions, it could have been your abs system taking over. if any of your lights came on in the dash, that would be good as far as information. i would have it checked by a technician to be sure.