Only once? Gee, I must be mean to my car but I consistantly bounce off the damn thing at least once a day. It's just the revs climb so much quicker with the manual than the auto (not that I had to shift in the auto). I think some times I'm just brain dead and forget the I have to do the shifting now. This is what inhaling laquer fumes for 7 hours 1 weekend and then gas fumes for 5 hours the next gets you. Many dead brain cells and the ability to forget what transmission is in your car.