Frankfurt 2009: 2010 Toyota Prius Plug-in Hybrid can't get any greener
Frankfurt Preview: More on Toyota's new lithium-ion Plug-in Prius
Frankfurt Preview: Toyota to show Auris Hybrid, Prius PHEV and two iQ variants
REPORT: Toyota will launch series production PHEV Prius in 2012
REPORT: 2010 Prius PHEV to feature 12-mile-plus EV range