WAV and Penny, that makes sense. Then, as butterfly strokers have more of their upper body out of water (less drag) more of the time, the best man would win.

I lost interest in athletics when I read that one olympic team had more medical personnel than athletes. Long time ago, now.

The business at the Indy 500 was predated when Lotus entered a car based on Formula 1 experience, which outclassed the then front-engined Offenhouser(?)-powered local cars. This from a vague memory.