One time I almost pulled in front of a bike like that. It had twin headlights on high beam so I was more or less blinded and couldn't see the vehicle at all. For a second I thought it was car some way off and then something twigged that told me it was bike almost on me so I stopped. Lucky. The rider on that occasion was just plain stupid. This rider was going way too fast on that bit of road but I wonder what else he'd done to make the car not see him - no lights or too much light perhaps.