The Inq wrote a short feature about a new technology EEStor is working on, they claim this technology may replace batteries. EEStor is a company found by Richard Weir and Carl Nelson, both man worked at IBM on disk-storage technology in the 90s before they formed EEStor in 2001.
Patent number 7,033,406 states that its technology means that a motorist could plug in a car for five minutes and drive 500 miles roundtrip between Dallas and Houston without petrol. The technology has been licensed by Toronto's ZENN Motor which plans to use it in the company's short-range, low-speed vehicles.
The technology involves material sandwiched between thousands of wafer-thin metal sheets, like a series of foil-and-paper gum wrappers stacked on top of each other. Charged particles stick to the metal sheets and move quickly across EEStor's "proprietary material".
This creates an ultracapacitor which can store and release energy quickly.
For some reason, EES tor has been keeping very quiet about its technology. It has refused interviews with hacks and does little in the way of promotion.