I am picking up my new Camry hybrid and have a couple of questions about the smart key and exiting the car.

1. If I have fob in my pocket and I exit the car, does the car remain on? I assume it has to. So if I forget to shut off the car, when I park, do the doors autolock after a few minutes?

2. Is there a noise when you exit with the engine still running? Power switch on?

3. Can you get a plain wireless entry fob, the push the button kind, as a 3rd key? And if so is it cheaper than the $400 replacement for the smartkey?

Any help you can provide would be appreciated.