Very true - and I spent a while last night watching Origamist's videos on how to...
It was a beautiful morning today, and I was travelling at about 15 - 16 mph along the bus lane towards West Hendon when - bam! A person in a nissan micra with children in the back and another in the front decided to look at me... for ages - and then pull out from the left. And stop! And then go!
No chance for me but I hit the rear panel - she was gone - and I performed a slo-mo over the handlebars, watching the road below / above me
The driver did stop eventually, (unlike the two important cyclists who trolled past!) and, as I had landed 'perfectly' and not smashed myself up - as usual - I mildly admonished her as to the welfare of her kids if I had been something a bit heavier (is there anything heavier than me on a bike?).
I restarted and then a few kms down the road thought about my 'phone. I also had a GPS in my back pocket -to check the 'in' time - and that was in the other pocket. I retained them both but I wasn't cognisant of checking for them at the time, so people - check your stuff if you have an 'off'.
Then tonight, I was a bit stiff in the elbow, and I noticed the lever was out of alignment. And,

my Rolls was torn! Gaffa did the trick though, and I was back racing RLJ cyclists up the Finchley Rd.
All that to say; check your stuff in pockets - particularly as the nicer weather is here and pockets tend to be 'open' not zipped. It's a silly thing - but could be important.
I also heard enough "I'm so sorry"s to last me a week or two
We have to be careful on behalf of others - no-one really cares and they aren't going to fall over in a car.
Take care!