I thought this was a post about the fitness of your troops....
But, yes... Michelin have been working on this concept for 10 years It's called a Tweel.
They have versions optimised for road use, as yet there are still the open sides, though I understand the final designs of the tweel are to have a sidewall of some sort.
Said to be much more efficient and much much lighter than a traditional Wheel/Tyre combination. Gonna suck for the flashy rims crowd eventually if it catches on.