I'm moving in a few months to a place about 1 mile from where I work. I have a '91 190e 2.6 with 142K miles and I love the car. I assume it is a bad idea to drive the car only one mile to work, but I'm just at the distance where driving will be necessary on some days (i.e., rain). What is a safe minimum distance to drive to avoid abusing my car? I'm very willing to take a detour on the way to work to save my car!