[Zeke]

The subject of relieving oneself while racing has come up before especially WRT stock cars and the looonnnnnggg Cup races. Almost all drivers consume all the water in the body that can be spared due to perspiration. But remember the cockpit in a stock car runs 135-140º during the race. I think F1 cars these days have less air circulating in there. At least I don't see any flexible fresh air hoses coming into their helmets.

Then there's the 4+ hour long stints in sports endurance cars. Again, a driver has to start hydrated but not with a belly full of water.

Dr. Jerry Punch tells a story about Rusty Wallace having consumed a ham sandwich just be fore being strapped in. He had a massive roll over early on and wasn't breathing. Dr. Punch found a lot of the sandwich had been thrown back up into the throat and was blocking the air to his lungs and he passed out as a result.

Lucky for RW that the good doctor figured that one out right there while they were cutting the belts. Otherwise, RW wasn't hurt.