Well, this is pretty cool. Evatran's Plugless Power wireless/proximity charging system lets you juice up your electric car, such as the Chevy Volt, simply by parking it in your garage. No plugging in necessary.
Much like conduction chargers for things like cellphones, this setup charges your car whenever the installed undercarriage charger is over the charging plate you'd install in your garage and connect to a power source. So not only would you never need to stop for gas, you'd never even need to think about juicing up your car unless you were going on a long trip away from home.
The tech is still a ways off, so don't expect to go out and buy this now. But hopefully within a generation or two of electric vehicles, this sort of thing will come built-in.