Tesla Motors (sports cars), Wrightspeed (sports cars and plug-in drivetrains for trucks), Fisker Automotive (electric sedans), Zap (low-speed and sports cars), Miles Automotive (low speed), Zenn Motors (low speed), AC Propulsion (retrofitting Scions for electric), Phoenix Motorcars (SUVs), Aptera (three-wheelers), Porteon (low speed electrics), Lightning (sports cars in England), Reva (economy cars), Ultramotor (electric trishaws), Myers Motors (freakish three-wheelers featured in Goldmember), Think (electric economy cars) and Venture Vehicles (three-wheeled electric cars.).
I'd say the only "major" player that Kanellos missed is GEM, which has been making glorified golf carts for ages. Other contenders not on his list include Universal Electric Vehicle, American Electric Vehicle, G-Wiz and Hybrid Technologies. I'm sure there's at least a couple more we're missing, but we're already got over 20 small EV companies. Pretty soon, he figures, this list will be much easier to calculate: "History shows that most of these companies will be wiped out." So it goes, as my favorite author would write.