Only one Ecto-1 and one Ecto-1a (part 2 car) were ever built and screen used for the filming of Ghostbusters.  Sony still owns the cars and have no intention of selling them any time soon.  This Ecto-1 is as close to a screen used car as you can get.  It has had a "screen used" life in show business since the 1960s, including a scene in 1967 movie The Heat of the Night featuring Sidney Poitier.  After being retired from screen use, it was converted to an Ecto-1 and restored by a picture car company for exhibition use.  We purchased this car and have displayed it in our museum for just over 10 years; and it has proven to be a crowd favorite.  It has helped raise thousands of dollars for charity and generated revenue with appearance / rental fees.  It has also come out of retirement recently and will be seen on the screen again in the near future as a feature item on A&E's hit TV show, Shipping Wars.The 59 Cadillac commercial vehicle is a rare car anyway you slice it.  Only about 200 of these hearse / ambulances were ever built.  There are only 8 known legit Ecto-1 replicas in America, making this a rare opportunity.      (the above video was produced by Star Cars and gives good incite to the Ecto-1)