With the wingspan of a jumbo jet and a scooter-sized engine, the Solar Impulse is a one of a kind.

Thanks to nearly 12,000 solar cells and four electrically-powered propellers, it's the first aircraft in the world that can fly without any fuel -- day or night.

The 63-meter wide, 1,600 kilogram plane is already a record breaker, staying in the air for 26 unbroken hours in 2010.

But it's about more than just flying, says pilot Andre Borschberg.

"We want to show what can be done with these technologies," Borschberg said."We can keep our quality of life but reduce our energy consumptions, reduce our dependency on oil and nuclear energy."

The idea for Solar Impulse came from Bertrand Piccard, the first man to travel non-stop around the world in a balloon.

"We almost failed (because of) lack of fuel," Piccard said of his epic journey back in 1999."At that moment, I made a promise that the next time I would fly around the world it would be with no fuel at all. And that's how the vision of solar impulse was born," he said.

But it wasn't until he met Borschberg seven years ago that he began to fulfill that promise.

With a budget of $134 million at their disposal, the Solar Impulse team have the sponsors and the support to realize their goal of flying around the world without fuel in 2014 -- a first in aviation history. 

My comment:

I think that is a great advance a plane without fuel, help the nature an the ozone layer and will be tuhe next generation of airplanes. One costs 134 million os $! is so expensive.