Tesla founder Elon Musk promises to end 'range anxiety' with Model S update

When people think about the practicality of electric cars, one of the first concerns is battery life, particularly given the ever-hungry batteries in our mobile devices. On Sunday, Tesla founder Elon Musk promised to erase those fears completely, a claim that, if true, could boost interest among those

worried about getting stuck in the middle of nowhere while looking at a blinking "battery drained" dashboard symbol. SEE ALSO: Tesla Model S has a secret James Bond setting The news came via Musk's Twitter feed, where he promised to deliver an over the air software update that will "end range anxiety."