No, I was having trouble remembering my name, let alone noting down license plates. And it was in a suburban street, so there was nobody else around...

I do remember the walk to the hospital - the front forks of my bike had been bent back far enough that the front wheel's back edge was behnd the bike's frame, ie you couldn't put the wheel straight. So I had to hold the bike vertical, rolling only on the back wheel, whilst trying to walk 5km in cleats, whilst concussed. I don't recommend the experience.