"According to the National Fire Prevention Agency, if an EV ever catches fire while you’re behind the wheel, immediately find a safe way to pull over and get the car away from the main road. Then, turn off the engine and make sure everyone leaves the vehicle immediately."
They should have written turn the ignition off ("ignition" also being a misnomer for EVs!). That will disconnect the battery, which won't stop the fire but will make firefighting slightly safer.
Which engine should I be turning off?