Long Term Study of Plug-in Priuses Shows Disappointing MPGsLong Term Study of Plug-in Priuses Shows Disappointing MPGs
2008 Prius Plug-in Hybrid prototype In a long term study, the Hymotion Plug-in Prius conversion returned worse than expected gas mileage. The study was conducted by the Idaho National Laboratory, and 115 Hymotion converted Priuses were...