03/05/2009 05:12 am ET | Updated May 25, 2011

Vehicle To Grid: Your Electric Car As A Backup Power Source

Electric cars are kind of a holy grail of green technology. Though it's important to keep in mind where the electricity would ultimately come from -- solar? wind? coal? -- it would be a pretty huge accomplishment. So how could you improve upon the efficiency and green-ness of electric cars? Alyssa Danigelis at Discovery found a way -- V2G:

Wouldn't it be awesome if we could have a two-way charging system when electric vehicles become widely available? That way the cars could store some power and serve as a backup electricity source in a pinch.