Reva/Goingreen G-Wiz is at the top of my list. Why ? Because there are like 800 on the roads right now, with no strings attached like lease only or something like that. They are reasonably affordable too, at 7000 british pounds.
AC version just hit the streets, with lithium ion upgrade to follow next year.
Ok, so the car is ugly, does not have any luxuries and is of limited use ( not for tall people, just for city driving , bascially two seats ) but hey, its a start that SELLS. They have a great place to move on from. They have a market, they are getting noticed by public and by the media, they are building a loyal user base.. they apparently also have enough technology reserve to evolve on.
I think from business perspective, they are off to a great start, i just hope that they get enough momentum going to reach the spot where they can bring a highway capable model to market. That would be an avalanche ...