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Urban transport | Two wheels good | The Economist

Tony Karrer Delicious EVdriven

Like electric cars, electric bicycles are classified as zero-emission vehicles, meaning they emit no exhaust gases. But some advanced new bicycles can store energy when they brake, meaning they can go many times further, and some advanced new batteries can charge up in a fraction of the time.

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Tata Takes On Air

Plug In Partners

If the manufacturers have no surprises up their exhaust pipes the car will be practical and reasonably priced. The compressed air technology is basically just a way of storing electrical energy without the need for costly, heavy, and occasionally toxic batteries. The Air Car uses compressed air to push its engine's pistons.