During the winter months many Chicagoans like to practice the reserving of their parking spot using a method called dibs. Dibs is the reserving of a parking spot by using an inanimate object like a chair or stool to prevent other vehicles from parking in that space.
If someone parks in your spot there is a high possibility they had to dig out theirs. If they’re not from your neighborhood then most likely they are only there temporarily. Spending energy to wreck someone’s car can be spent on digging out another spot. Nevertheless, if it is 40 degrees Fahrenheit outside it would take less effort to find a spot to park than when you first dug out.