Photos: One-of-a-kind powerboat

The Earthrace Project has so far raised about $3 million in cash and sponsorships, including a $750,000 second mortgage on Bethune's home in New Zealand, to build the powerboat and fund the trip to 30 cities in six months. Sponsors include Panasonic, Cummins Mercruiser, BioDiesel Oils NZ, Reef Bulk Fuels and Hiway Stabilizers Environmental.

Photo by Stefanie Olsen/CNET News.com