[gnosis8]

The ignition button shuts off the engine AND shifts to "P" to park:
When you're done driving and have fully stopped in your parking location and ready to park, with your foot still on the brake, just push the ignition button once to shut off the engine, and the transmission will automatically switch to "P" to park. Done. Now you can just get out of the car and walk away as you enable the alarm. Don't worry, the radio and everything else will automatically shut off after about 5 minutes.