Since the car's auto-stop engages at every stop light/sign and turns the engine off, continually restarting the engine like that must not be damaging to it as you might expect with other cars. What if you actually took the key out of the ignition at every stop? Is there a difference between starting up after the auto-stop is engaged and starting up the car period? The startup of the HCH is smoother and quieter than most cars, with little or not rev in rpms. What do you think?