I put together a little analysis of the work efficiency of the Model S vs other electric models such as the Leaf, Mitsu i-MiEV, a couple of Renault cars and the Mercedes SLS E-Cell.
http://www.teslation.com/post/50880742296/teslas-57-technology-advantage-over-nissan
http://www.teslation.com/post/50880742296/teslas-57-technology-advantage-over-nissan