That's cool... I saw this on "Modern Marvels" last night too. The US could be totally powered by about 600+ of these towers. The Aussies are also working on a solar "wind" tower that heats air on the ground and directs it up a 2500' tall tunnel with the draft powering turbines at the base. The area covered by the collector is about 3 miles across...

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-Evan


Benz Fleet:
1968 UNIMOG 404.114
1998 E300
2008 E63


Non-Benz Fleet:
1992 Aerostar
1993 MR2
2000 F250