Picture the scene if you will, I have an A3 2006 went to the supermarket packed it with goodies plus luggage and reversed parked in on a drive. After filling it - bearing in mind the car had been parked for 6 hours or more, went in the kitchen and noticed the car dashboard lights were on - fully - only trouble I had the keys in my had so went out to investigate. Turned the key engine started depite being in reverse gear and handbrake on and went like a train, I was hanging in half in half out, broke my shoe because my right foot nearly got sucked under the car. As it was going at huge speed towards the tree managed to get my left foot on the brake otherwise it would have gobe througth the tree in down the garden and broke a brick wall. As it happens I slowed the impact but I have concussion, three broken fingers bruises where you would not believe and the car has been repair. So in fairness what the hell is going on there!