If you can't ride your stolen bike, neither should anyone else. That's the basic premise behind StayLocked Bicycle -- a prototype that effectively self-destructs whenever someone tries to snatch it. The magic lies in the bike's integrated locking mechanism, which is built in to a pair of tubes extending from the back wheel to the seat. Riders can attach the swiveling lock to any fixed post, but if someone successfully breaks it, the bike's chain stays will no longer support his or her w