The bicycle is the most efficient human-powered means of transportation in terms of energy a person must expend to travel a given distance. But now, former sports-car designer Rob Cotter, offers an alternative for those who wouldn’t mind a little push from the sun. Threehugger.com’s Sami Grover reviews the ELF, “An American-built solar-powered trike“. Although it might not convince die-hard fans of the bicycle, this is a fine option for the commuters that want to leave their cars behind.
You can also check out this Quest Science video about this hybrid vehicle: