I get why, but my Volvo (2017) WILL NOT let me lock the keys in the car. Which is annoying if I'm trying to safely warm it up on a -15 Minnesota day and have the spare keys in the house. There's lots of forums detailing tricks involving rolling the windows down or locking the car from the back seat. I love all the tech automation and safety features, but at times I find myself befuddled by the designers choices.