My 91 190e 2.6 has 131K and I've had it for about 2.5 months. For the last ten years I've always had long commutes to work (20-40 miles one-way). Starting July 1st, I will (literally) walk across the street to work. I know nothing about owning a car that will basically become a weekend driver. Should I take the car out on the highway a few times a week? Should I let it sit the whole week and just use it on the weekends? I'd like to keep the car for a while, so I would appreciate advice on what is best for the car.