I doubt that union workers will be making these:
Elio Motors and the Three Wheeled Car - A Moonshot Project ($6800, 84 mpg)
http://www.freerepublic.com/focus/f-news/3119736/posts
Remember the Messerschmitt KR-175? Also a three-wheel bubble car; got about 64 mpg, but top speed was only 50 mph.
I have been watching the development of that.
It seems to be a cross between an nineteen eighties B. D. Lightstar and a BMW Isetta.