Apologies. I unintentionally mixed some numbers. My typical ride was 30 minutes, on a route with few traffic lights. That's an average of 15mph, which is pretty tame.
20 minutes was my _record_, with me hauling ass as fast as I could possibly go. And for the record, I was drenched. But I brought a change of clothes and had a quick shower that day. :)
Ya, that's 22.5 mph. That's on the pretty high end already on flat ground. When you factor in traffic lights, he has to go even faster. At such a power level (2x that of riding a moderate 16 mph), I can't see how he wouldn't be breathing hard and sweating a lot.
...or you are luck to live on the top a hill and work in a dried lake bed.