I will never purchase another Buick. This has to be the worst safety feature that I have come in contact with. The car completely rolls forward or backward up/down a hill while in gear. On an incline I have to power brake so that I do not crash into the car behind me. It really bothers me with the grand kids around..or another this problem could definitely hurt someone badly or worse and the only thing I am being told is that this is the way they are making these cars for emission purposes. I am being brushed off and not happy about it.