Moonbeam can be built in your garage if you are patient and handy with tools. this website gives you all the details.
moonbeamplans.com
here is a video:

http://wm.wcsh-wlbz.gannett.edgestreams.net/news/111906_car_wcsh.wmv

and another one:

boston.com/news/globe/magazine/articles/2007/04/22/video

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100  car  high  microcar  mileage  mpg