It doesn't have to be sexy. It has to attract people that would buy a Prius or Leaf (and neither of those are the least bit sexy). It has to get good consumer reports ratings (the Volt does)..

I was actually surprised by the Volt, since a lot of my friends and coworkers bought them. Those people generally drove Mazdas, Hondas, and Toyotas.

If Chevy kept working on their eco-friendly image and continued to produce decent enough quality cars that get good consumer reports ratings, they'll probably do fine.