Interesting....but would they ever be able to fly commercially? If they succeed, it could tremendously drop the travel costs...or jack up the profits for aircraft manufacturers or airlines. And the oil companies will thwart every effort for them to succeed. ESSO made $1287 per second in 2007.

http://www.theglobeandmail.com/servlet/Page/document/video/vs?id=RTGAM.20080523.wvsolar0523

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