Invisible Helmet Deploys Like an Airbag on Impact

It looks like a trashbag coming out of a finely patterned neck pillow. But if you find yourself colliding with a car while on your bike, it could actually save your life. Meet Hövding, the invisible bike helmet. It's a real, actual thing. But it won't be so easy for it to come to market in the United States. Here's a three-minute documentary about the Swedish helmet and its founders: Bicycle injuries are obviously serious business. The 677 cycling deaths in 2011 (the last year for which there's...