First time it happened car lunged forward at shut down, died completely. 30 minutes later was able to turn it over. mechanic said it needed throttle body but it was on national backorder until august 2009. so had to drive it home. happened quite a bit throughout that time until i realized that it had a lot to do with having the a/c on. it happens even without the a/c on sometimes at lights, stop signs, and in parking lots, and also when in reverse it lunges in that direction as well; sometimes at very high rate which is scary. have 3 children and cannot fathom why this car has not been recalled. i still owe money on it and now it is sitting in my mechanics garage because the cvt transmission went out.. 5 weeks now and i do not have transportation because i cannot afford to fix the cvt transmission that alot of other people are having the same problem with. *tr