The site didn't load for me, but I found their YouTube[1] channel to have a gander. They remind me a lot of the microcars[2] of the 40s and 50s, the most famous of which would be BMW's Isetta[3]. In terms of style, however, I the Elio reminds me a bit of the Messerschmitt KR200[4].
Oh Lord. Their videos could use some work. Not trying to diminish their work though. I'm really happy that multiple companies are tackling the affordable, fuel efficient, car void.
I found this piece that discusses their financial viability. http://cleantechnica.com/2013/08/19/paul-elio-motors-release...