It's probably the part that you left out. Not only the youngest, but, if I were a betting man, I'd have to say that it is more then likely one of the most expensive shows to operated in the whole of WDW. Cars, professional drivers, massive usage of natural gas, safety equipment, tires and liability if something really bad were to happen.
Don't get me wrong, I enjoyed watching the show. I didn't always go to it every trip, but, I did go occasionally. However, from the very first show I wondered how the accountants would react to the cost. Even if they weren't putting new stuff in that area, it didn't have a long shelf life.
I still don't get the affection for riding past the "faux" Golden Girls house. Built long after the show first aired. It was just a copy of the one we saw on TV, like the rest of them on that street. It fit in well when they had the massive back stage tour, it fit perfectly, but, when it stopped being a studio it was nothing more then a bunch of propped up walls.