HE MUST HAVE BEEN DOING AT LEAST 80+ mph!....................
You would think so but no, more likely the high 30's to mid 40's. There were sections in that chute where you could see him edging and trying to check his speed, especially towards the top where it was widest and he was able to make a couple small turns.
Typically your world cup downhillers max out at around 80 - 85 mph on the worlds' steepest courses....
In any event, that was pretty impressive, something I'd never have tried when I was young.