Core77

If you were a fan of the Zweistil shape-shifting bike concept when it got featured here on Core77 back in May (or on co-designer Stefan Wallmann's Coroflot portfolio), you'll want to head over to SolidSmack.com, where Stefan gets into some detail about the design and development of the unique vehicle. There's some pretty detailed discussion of mechanism development, the extensive use of physical prototypes, and the role CAD played (and didn't play) in taking a slightly crazy concept from sketchbook to road.