This week, GM announced it plans to begin testing its plug-in, rechargeable car, the Chevrolet Volt, in the spring of next year. Says GM bigwig Bob Lutz, “We’ll have some on the road for testing next spring, and we should have the Volt in production by the end of 2010.” The secret ingredient to the Volt’s claim of 40-miles-per-charge is its “next-generation” lithium-ion battery, which is designed to last for 10 years, and which Lutz says will be ready by this October. Can we get one for our laptops?