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The TW4XP Car Uses Both Electricity and Human Power

 - Jul 26, 2010
References: tw4xp & green.autoblog
The TW4XP car is an unusual electric three-wheeler from Germany and is one of the vehicles left in the Progressive Automotive X-Prize for the Alternative Side-by-Side category. The car was specially designed for the competition and is a strong contender for the $2.5 million prize, as the TW4XP car stands for "three wheeler for X-Prize."

The team of the TW4XP car is expecting to bring the vehicle into the market in the near future with a partly-removable power train.