Swiss adventurer Louis Palmer arrives with his solartaxi in front of Reichstag's building in Berlin July 9, 2007. Palmer started for his 50,000 km (31,068.56 miles) journey around the world in Lucerne, Switzerland. The solartaxi, which can travel at a maximum speed of 90 km/h (55 mph) on its three wheels, is powered 100 percent by solar energy obtained through the vehicle, which includes a trailer on the back with solar cells. [Reuters]

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