Grasshopper bike generates energy, is super portable

Biking is a great way to get around, what with it providing exercise and being totally eco-friendly. But what if it could be even more eco-friendly?

Well, not only does the Grasshopper not use any energy, like all bikes, but it actually generates surplus energy that can be used for other things.
In addition, it folds up into a compact, carryable size, making it perfect for city dwellers who don't have much room to store their bikes and have to lug them up flights of stairs every day.

Oh, and did I mention it can also be converted into a stationary exercise bike? Yeah, it's that awesome. I want one right now.

Via Yanko Design