I thought i remembered the salesman in his big line of bull, say something about the car not rolling back on hills. Yesterday i had to stop for a truck on a very steep road maybe 45 degrees. While still in drive i released the brake and sure enough i rolled back about fifty feet with my foot on the throttle. I'm not sure how it happened, with the radio on and the engine so quiet, but i had to hold the brake, put it in park and restart the engine. I think it must have stalled while i was rolling back in drive. This was the first time i noticed this and haven't tried it again.