Toyota introduces 2012 Prius Plug-in Hybrid
Green Car Congress
SEPTEMBER 17, 2011
According to Toyota, one of the things they discovered during the demo program was that the battery packs responded better if they were allowed to rest prior to recharging.). A new EV Drive Ratio display records the ratio of driving distance covered by EV power, and the Hybrid System Indicator shows possible EV driving range when in EV mode.
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