At one time we had barns rather than garages. We opened the door manually rather than with a remote. We had a horse or two, maybe a cow parked in it. There were no oil spots on the concrete floor but we did have other stuff on the floor. Along the walls were hanging the gear we needed to ride our horse or maybe a buggy. Anyway here is an image from a barn at the Superstition Mountains Museum near Apache Junction, AZ.