 It introduced plug-in hybrid electric vehicle (PHEV) upgrade kits in February 2006.In February 2007, Hymotion was acquired by "A123Systems", the manufacturer of the batteries that Hymotion uses for upgrades.Designed for the Toyota Prius and the Ford Escape and Mariner Hybrids, these kits can be purchased by individuals for the Prius and professionally installed by 17 different certified companies in Canada and the United States.