Would you trust an airbag helmet?

This month we showed you the flatpack cardboard helmet being showcased at the Cycle Show. This week we bring you – ta da! – the inflatable helmet. Two Swedish designers have come up with the Hövding – a sort of waterproof collar with an airbag helmet built into it which inflates around your head on impact. According to wired.com Hövding means "chieftain" in Swedish, and the air-helmet was designed by Swedes Anna Haupt and Terese Alstin as a university thesis project. The collar contains the bag itself, helium to inflate the airbag and sensors which tell the Hövding when to fire. The sensor unit consists of gyroscopes and accelerometers which constantly monitor movement and deploy to bag when you're in danger. The device is charged by USB (firmware can also be updated via the same port) and you switch it on by zipping the collar shut around your neck. The airbag helmet is expected to cost around £300 when it goes on sale next spring via Hovding.com The airbag has been tested, as this film shows: But would you trust it?