I used to work with a guy whose father worked in a car hire company at Heathrow airport. He witnessed an American trying to drive a manual car away from the car park where it had been parked end-to-end between several other cars. The driver kept stalling because he didn't apply enough revs before letting the clutch up, so he overcompensated and got the engine up to about
4000 rpm before letting the clutch up smartly. The car shot into the car in front, catapulting that car forward into the car in front of it. In his panic to extricate himself from this situtation, he then processed to do the same in reverse to the cars behind him. The total bill was three cars written off (American's car plus the one in front and the one behind) and two cars needing major surgery (the ones two in front and two behind).