Huge kite helps container ship across Atlantic

Oil at more than $90 a barrel is concentrating minds in the shipping industry.

The world's first commercial ship powered partly by a giant kite set off on a maiden voyage from Bremen to Venezuela on Tuesday, in an experiment that inventor Stephan Wrage hopes can wipe 20 percent, or $1,600, from the ship's daily fuel bill.

"We aim to prove it pays to protect the environment." - Stephan Wrage, inventor