Parking Lift or Lifts????

I worked at a service center that had a different lift in each of 5 bays.
The 4 post with the added pieces over the tracks to lift the wheels off the tracks was my favorite. Do brake work sitting down, then right on up for the oil change, trans service, any job.
I got a couple horror stories about parking one above another though :(
Just make sure no one climbs to the top car after a cell phone or garage door opener left in it. And cover the bottom car with plastic sheeting ! A fluid leak can ruin paint.