Fasten your seatbelts! In this episode of Make: Inventions I do my best to make an airbag system that can detect a crash and deploy safely in 1/20th of a second. It takes sewing, metalworking, woodworking, programing, electronics, and pyrotechnics, some of which I had to learn along the way. And to be sure it works I break out the high-speed camera and build a crash test rig 15 feet high and 40 feet long. Read all about it on MAKE: /