Quote:
Originally Posted by redpoint5
Finally, the Prius has systems in place to preserve or accelerate warm-up time. The Gen II uses a vacuum bottle to store warm engine coolant, which preserves the engine heat after it is turned off. The Gen III uses heat from exhaust gasses to warm engine coolant quickly.
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I wonder if this is a common feature on newer cars. My parents' new car stays warm for hours after shutting down.