My home town LBS, The HUB Bike co-op of Minneapolis, sponsored an event for people to design the most unique and useful bike gadgets.  Originally conceived by Brady Clark and engineered by Mykle Hansen, the SPEED-VEST is a cycling vest that uses electro-luminescent wire, a cyclocomputer, and an Arduino to show your current speed on your back for all to see.

With a reflective vest, and a giant glowing billboard on your back, we have yet another way to be seen while commuting to work (in style).

Click here for a complete rundown of the project, and a ton of pics!