Cool, thanks!
Ah, high speed, he was on the brakes so hard it was doing a stoppie (so rotational momentum already happening) and hitting the car was just enough.
Really beat from a physics standpoint. Sorry for the rider. The car continued on a left when they couldn't see, but the bike was going so fast I doubt the driver would've seen it in time anyway.
I say this as a rider of (mumble) decades - that rider would've eventually had this kind of crash driving like that.