Jebus! That would be one scary ride..but fun as hell! I would have got out at the end and beat that other vehicle off into the ditch! I thought he was going to eat it.
Here's a little clip of how to drive on a wet track. LOL No overbraking and washing out into the grass there. 2 times the water on the track at 2 times the speed. Looks to me like the Kiwi driving still thinks he is on the gravel road Pike's Peak run.