From Forbes:

The next big thing in hybrid vehicles may not come from the likes of Toyota or General Motors.

Instead, it may come from Charles Samuel Greenwood. Greenwood has been working on a human-powered vehicle concept for decades, and all of his hard work is coming together in the form of the HumanCar Imagine PS.

The vehicle seats four and generates power through a system of hand cranks. Yes, hand cranks.

One might think that a hand-cranked vehicle would be marketable only as a neighborhood vehicle with a limited top speed. However, the HumanCar has surprising potential...

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