Yeah, I though that flagella were just little whippy things that corkscrewed somehow... but then I looked at that page this morning and I'm still gobsmacked.

check this one out too, there is a general topic of biomechanics regarding molecular motors:

https://en.wikipedia.org/wiki/Molecular_motor

Give yourself an Xmas gift with a print copy of "The machinery of life" by David S Goodsell. You will love it.