A bike that can switch between a freewheel and a fixed gear at the touch of a button. It’s called the Alpha and I’m very impressed. They call it SWIFT Drive Technology and I hope they are patenting it!

A team of mechanical engineering students at the University of Pennsylvania have spent the better part of the past year designing and fabricating the ultimate concept bike, which they’ve called “Alpha.” Thanks to rapid prototyping technology, the bike was realized almost entirely at UPenn’s engineering school.

-Via Core77