Are you "Tired" of managing the air in your tires? Why not try Michelin's Tweel.
DETROIT, M.I. (January 9, 2005) – Today at the North American International Auto Show (NAIAS) Michelin showcased a potential future for mobility, an integrated tire and wheel combination missing one ingredient that is vital for traditional tire performance...air. The company unveiled the first real-world fitments for its revolutionary "Tweel" – which operates entirely without air.
Okay so they are not quite ready for production yet and you probably can't buy them yet. I can't decide if they are really cool looking or funny looking. You be the judge.
Check out the Michelin Press Release for more information.