But getting excited about these sorts of vehicles can be short-lived. Concept cars are cute, but when are we going to see a plan with some mass production meat to it? Walter McManus, a former GM exec and now the Director of Automotive Analysis at the University of Michigan, was skeptical of the Volt to the Independent:
"The battery technology that they are depending on is not available yet and just pouring money into it is not going to make it happen. They need to take fuel efficiency more seriously. GM and Ford have such technologies in their cars overseas; they should put their own technologies into their cars here."But GM sees a sunnier outlook. The company claims that the battery needed to run the Volt could be ready for mass production for U.S. cars between 2010 and 2012. Let's hope so.