The company is Hymotion, below is a list of Plug-in Hybrid companies from the plug in america site, I have seen the device in action and it sites in the spare tire well, it's about the size of a large suitcase.
Electric Car and Plug-in Hybrid Equipment
EDrive Systems, developer of leading plug-in hybrid systems
www.edrivesystems.com
Electric Vehicles of America, New Hampshire, suppliers of EV parts
www.ev-america.com
Energy CS - plug-in hybrid engineering group
www.energycs.com/
Hymotion, aftermarket plug-in hybrid conversions
www.hymotion.com/index.htm