An article I read talked about the insurance issue about Aptera, saying it is classified as motorcycle and has got insurance permission in California.
Another hot topic is PHEV (Plug-in Hybrid). My favorite company Fisker Auto is building the first PHEV car and claimed to mass produce it in 2010. But I didn’t see Fisker Karma in the X Prize contender list. http://www.fiskerautomotive.com/
A public company QTWW is building the powertrain system for Fisker Karma.