So I was sitting in the parked car talking on the phone
So I was on the Bluetooth phone when I pulled into my garage and put it in Park, but I didn't press the Off button so I could keep talking on the car phone. After about 10 minutes, the FE gauge suddenly zoomed from E mode all the way up to 0 mpg and I could hear the engine (or something) revving up. Why would the car do that when I'm just parked? Is it bad for the car?
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