Not counting the 2 times I have run into the back of parked cars (one was parked on double yellows just around a blind bend, and therefore deserved the dent in his boot. The se ond was very low speed with no damage whilst I was teaching son to ride).
My only vehicle incident was when I was about 13. Barreling down Watling Street on the hill heading east out of Radlett. I was trying for warp factor 7 with head down, and dont remember anything more untill I woke up on the grass verge on the other side of the road, surrounded by people saying "dont try to move, the ambulance is coming".
Apparently, according to the witnesses, I was overtaken by a gravel lorry doing 70 ish, and got sucked into the vacuum behind it. Lorry didnt see or stop. My face took most of the force , burning all the skin off on one side. Some minor other injuries to arms and legs.
The best part as I rember it was revealling the injuries to my fellow ATC cadets about a week later at some black tie dinner event. I manged to keep everything hidden untill we arrived at the venue. I looked like the phantom of the opera in a white shirt black tie and DJ, and half a face encrusted in full scab. Put the weaker ones right off their dinner!