Battery breakthrough for electric cars?

A123, the company that supplies batteries for the Fisker Karma, claims to have made a "game changing" breakthrough.

It says it has developed a lithium-ion battery pack that may need no external cooling or heating, being happy to operate at any temperature between plus 45 degrees and minus 30 degrees. So what, you might ask? Well, the problems with keeping lithium batteries cool in a car was the main reason why they took around 10 years longer to get into cars than into mobile phones or laptops.