Hyundai's hydrogen fuel cell car hits the road in California

South Korean auto-maker Hyundai says it has launched a new era of clean, hydrogen-fueled motoring. In a high-profile ceremony on Tuesday, the company's first hydrogen fuel-cell customer in the US received the keys to his new Hyundai Tucson, although as Rob Muir reports, there are still challenges to be met before the technology becomes mainstream. Credit to Reuters.