This isn't complete pie-in-the-sky stuff. NaS batteries have been around for decades (http://en.wikipedia.org/wiki/NaS_battery http://en.wikipedia.org/wiki/NaS_

This isn't complete pie-in-the-sky stuff. NaS batteries have been around for decades (http://en.wikipedia.org/wiki/NaS_battery http://en.wikipedia.org/wiki/NaS_battery) and in fact Ford was building EVs with them in the late 90's. It looks like they found an interesting tweak to the technology that might make it suitable for home use. It's possible (likely, even) that it will end up either too expensive or too unreliable to be practical, but it's certainly newsworthy.