My 2016 Camry Hybrid consistently gets 39mpg. There are all kinds of situations where you don't need an engine, and it shuts off completely - like coasting down

My 2016 Camry Hybrid consistently gets 39mpg. There are all kinds of situations where you don't need an engine, and it shuts off completely - like coasting downhill, on a ramp from one freeway to another, at 42 mph. Engine shuts off, and regenerative braking slows the car as much as everyone else is braking.