Updated: Nov 25, 2020
In an automatic N is for towing the car so you don’t damage the gearbox.
In a heavy jam where you’re not moving for many minutes at a go then just turn off the engine.
Yes, otherwise there is no other way to tow an automatic transmission vehicle
In modern vehicles staying in D for short periods is part of the design. Stop start systems add additional fuel savings so no need to manually switch off.
Yes that is true and therefore if you’re at standstill for more than 5 minutes why not switch off your engine and save fuel, reduce polluting emissions and save wear and tear on your gearbox, engine etc?