Are supercaps the key to hybrid technology?

Ultrabattery: Lead acid + supercaps

A couple of weeks ago I wrote Hybrid Cars: Is plugging in always the best option. One angle I took with that article involved supercapacitors. Essentially, I wondered whether a combination of a supercapacitor and a battery could result in cheaper (compared to plug-ins), incredibly fuel efficient hybrid vehicles that don't need to be plugged in for power.

That's the idea behind the Ultrabattery, except for one interesting difference. Read more....