There was some comments from locals to the race I read on the original Facebook post - they reckon it's a blind approach and super steep. You have to know its coming or you won't have enough braking area to slow you down ( circa 15% gradient in the braking zone) which is why the first few guys seem to be going so slow.
Anyway, they shouldn't be mixing car and bikes with riders like that. If the car hadn't been there he'd have had at least another 20m of braking before he went off the end, or he could have laid it over and slid ( body provides more braking than tyre only)