Top 20 Eco Trends in 2008 > Number 17
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 17 / 20 - 9,654 views | Three-Wheeled Green Machine (GALLERY)Chris Skleryk - Trev! What makes this little guy unique is that it was designed by the students at the University of South Australia. After spending several years in development, out spawn Trev, a three-wheeled green…   
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