I was pulling slowly into a parking space at a grocery store, with my right foot on the brake, nearly stopped. Then the car rapidly and suddenly accelerated unintentionally. The car jumped over a bush, a median, rammed into a parked car, pushing it across the next parking lane into a third car. The third car, in turn, bumped a fourth car. Safety: The air bags did not deploy. The potential for significant injury to me, nearby pedestrians and people in cars was extremely high. Luckily, I was able to brace myself sufficiently, there were no pedestrians nearby and no one was in any of the cars. There were no warning lights, beeps, messages or any other information to indicate a defect or potential malfunction.