I've seen a few futuristic bicycle designs, but this one actually makes a serious and convincing attempt at...

I've seen a few futuristic bicycle designs, but this one actually makes a serious and convincing attempt at addressing a basic problem:

http://www.tuvie.com/flexi-bike-with-rotating-frame-allows-you-to-change-your-riding-posture/
http://www.tuvie.com/flexi-bike-with-rotating-frame-allows-you-to-change-your-riding-posture