Oh but they do/will. Musk said that the ones with solar panels can go completely off the grid and continue to work in a zombie apocalypse. The only way that is

Oh but they do/will. Musk said that the ones with solar panels can go completely off the grid and continue to work in a zombie apocalypse. The only way that is accomplished is through energy storage. http://www.cnbc.com/id/100777849 http://www.cnbc.com/id/100777849