Anonymous wrote:If you're worried about someone with a manual rolling back and hitting you, then that's an indication that you're pulled up too close to them.
If it's not a manual, then it's a car with an automatic transmission with a weaker or older torque converter or possibly a failing fluid pump.
+1 I used to drive a manual and especially when first learning to drive, it would make me so nervous how close to my bumper people would get when we were stopped. Now, it makes me nervous that I'm going to get rear ended if they get so much as a tap from the car behind them, they're so close.