All of my previous cars (BMW, MB, Audi) have had a feature that allows the heat or AC to stay on for several minutes after I leave the car to run into a store or whatever. Based on my Googling Tesla does not offer this feature. Since we're a pretty smart bunch, I'm sure someone has come up with a workaround. I saw a post about leaving the door slightly ajar but I'm not comfortable doing that. Any other suggestions? Any thoughts one why Tesla would ignore what should be a pretty easy feature to implement?