# Tweet by [@keefmoon](http://twitter.com/keefmoon) on 2013-02-14 21:41:07 > [!INFO] Archived from [original tweet](http://twitter.com/keefmoon/status/302170630613241858) In reply to: [@GlennF](http://twitter.com/GlennF/status/302166467791704066) @GlennF I'm with Musk on this. If you know you have 60 miles left to go, why charge it only long enough to have 30 miles left in the tank?