Ford's Hybrid Cars- More Mileage

Ford Motors plans to use lithium-ion batteries in their hybrid vehicles in the next three to four years. The Lithium batteries are more powerful and will step up the fuel economy as well. GM and Toyota are also planning to do the same with their hybrid models (Chevy Volt and Toyota Prius) when they release them(again in the next 3 to 4 years). Till then we'll just have to use our current unfrugal, fuel consuming batteries.

Source i4u