[YuccaGloriosa]

"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."

Which engine should I be turning off?

[rwmj]

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.

[closewith]

Presumably a reference to PHEVs.