What to do with a older car that is high mileage but is in very good condition?

I have a 2003 buick lesabre ice blue color, I have babied this car for years, nothing wrong with it mechanically at all, paint and interior is perfect with nice pretty rims. I am getting 2 new cars and just will not have space for it in the garage, sell it or somehow have it as a back up car?
12 answers 12