This was the Hummer that never was and probably never would have been. It was the ultimate antidote to Hummer's un-green image. The O2 concept was not only emission-free -- it ran on a fuel cell -- its algae-filled body panels were designed to produce oxygen.
The O2 existed only as a drawing submitted for a design competition in late 2006.
From a text therapy platform to apps that push you reminders to breathe, these self-care startups offer help on a daily basis or in times of need. More