Yes but 100mph isn't exactly quick, and the bike had his headlamp on.
100mph isn't quick on the public highway? Thats insane...
From that video, the car had already started the maneuver so he wouldn't be checking his mirrors again for anything let alone something that fast, be honest do you look in your mirrors after you have pulled out to over take?
Bikers think that its totally the cars drivers responsibility to look for the biker, when its not, its not anyones job to look for hazards such as bikes doing way over the speed limit trying to get the "god like" achievement for most cars overtaken in a single maneuver. The roads would be even worse if you expected everyone to spend 50% of their time looking in the mirrors for bikes that may or may not be there, and if you do see one, you then have to make a second look to see if hes going ballistic with the right hand?
I had a simple rule that i always followed on my bike:
Do not overtake until your absolutely sure that the car/truck/van/bus knows that you're there and that you're about to overtake. Its not rocket science, and yes progress is slowed somewhat, but having said that, I loved the acceleration more than flat out speed.
Both car drivers and bikers have the exact same mentality most of the time, were all human after all, its just that bikers usually have the tools to do the job better than cars. I know i got a lot more frustrated with other road users when i was on my bike compared to when i was driving my car.
Being on a bike lets you see more and gets you seen less.