LMH, that wasn't a good day at the office was it? The others have offered most reasoned and reasonable recommendations, based on their experiences of being run into. Personally, I have no such experience to offer. I do however admit to rear ending 2 other cars, and reversing into objects/vehicles at least 6 other times. 3 of the incidents on my own drive. Just be careful if you park near me, OK?
Training? 9 miles whilst small daughter was at Guides and wife was away. As 16 year old daughter was at home and her boyfriend I presume that they had it away. Any opportunity, and all that.