I echo the comments that I am glad you are OK.
I have been taken from behind a few times on my bike, ooer, and always while stationary. What is that expression, 'hide things in plain sight'? Just how difficult is it to see a stationary odd shaped object (no offence meant) in the road in front of your eyes? Having said that, I have seen people pull out in front of fire engines when they have their blues'n'twos on...so what hope have stationary objects got of being spotted?