An article in the New York Times (August 31, 2012) describes two incompatible fast charging plugs – one standard, CHAdeMO, developed by Nissan, Mitusbishi and others, with separate prongs for slow and fast charges, installed in over 1,500 chargers. The other, developed by Detroit’s automakers and German automakers, with a combined plug for slow and fast charge. Should the simplicity of a single plug demand a new standard that could make charging difficult for existing vehicles ? Will the incompatibility of these alternate standards diminish the rate of growth of electric vehicles ? Will there be a benefit from a single government standard for electric vehicle plugs ?