I don't leave a gun in the car in FL. It comes from my living most of my life , 45 years in NY, and your car get's broken in to or stolen, "if not in a parking garage", and even there it's not safe. Also in NYC, my carry permit stated that you were not to leave your gun in the car unless you are in the car. "the polar opposite of FL". So I just don't do it, having a decent car, it is a target for thieves.
Being in a gated and patrolled community with low crime rates, didn't stop a gang of kids from breaking into 22 vehicle's in 1 night. It's not worth having to explain it to the cops, so I just carry on my person, spare ammo in the vehicle.