env fuel cell bike. This is about one of the coolest things I have seen in a long time. The env fuel cell motorcycle (pronounced "envy") has the potential to change a lot of things. It can go up to 200 miles per fueling, coasts along at speeds up to 50 mph, and can run for up to 4 hours continuously. There are no moving parts in the engine, and the bike is no louder than a desktop computer. Its emissions consist of the following compound(s): water vapor.

Pioneered by the UK company IntelligentEnergy, the env is rated as a motorcycle, and is expected to retail for between USD 6,000-8,000 once it is mass-produced. Each fill-up is expected to cost about USD 4. The one piece of data I'm missing is where and how I would buy myself a big, hot, flammable can of compressed hydrogen gas. I have a sneaking suspicion they have underestimated the storage and transport costs of a highly flammable gas like H₂. Hopefully I'm wrong, or missing something...

Be sure to read the second page at their site about the core. Did I mention that already?