"I heard about these tires for a while now. Could you imagine the amount of mud that these things could get stuck in them!! "

I was thinking the same thing, but not from an off roading persective. Just the normal "road based" winter mud/slush gets plenty nasty. Imagine the "ice pack" that forms in the wheelwells, and can rub against the tires, forming INSIDE the tire! Yuck!

I figure either they've somehow engineered them with that in mind and they some how "shed" the stuff, else they've neglected a good portion of the country (or world), not just the off road crowd.

Or maybe the prototypes have the internals exposed for the "wow factor" and the production models will have some sort of protective sidewalls, and actually look more like conventional tires from the outside.

Pretty cool stuff though!!!