On (literally) Reinventhing the Wheel
The term "Reinventing the wheel" is seldom used literally. But Michelin's Tweel technology might just have that potential. Originally displayed in 2005, I hadn't heard of it until today. There's a Gizmag Tweel article and photo gallery worth checking out, and also a Wikipedia article on Tweel.
I guess it's still very much a prototype, and it definitely remains to be seen if the technology is truly practical. But the thought of never having to worry about flats, especially on a bicycle, is very enticing. I wonder how the flexible spokes perform across a wide range of temperatures (think summer vs. winter) though...