Eco-car more efficient than light bulb

[Areometer]

[img=right:1ff072722f]http://i.a.cnn.net/cnn/2005/TECH/07/04/eco.car/story.ech2o.jpg[/IMG]LONDON, England (CNN) -- An eco-car that can travel the world using a fraction of the electricity it takes to power a light bulb, has been unveiled by its British creators.

According to the British gas firm BOC, its hydrogen-powered BOC Ech2o needs just 25 Watts -- the equivalent of less than two gallons of petrol -- to complete the 25,000-mile global trip, while emitting nothing more hazardous than water.

But with a top speed of 30mph, the journey would take more than a month to complete, even if the car was driven flat out with no pit-stops.

>> Read More @ CNN.com Technology