Just as an FYI, the Fire Be Gone does disappear regularly from one end of the train car (it would be the left one on the solid blue side*), probably because of its closeness to the edge of the lot. When I first place a car lot, it's there, but the next time I load it, it's gone. I've put it back, only to have it vanish again on the next reload.
*Edited to add: I went back in and checked, and it looks like it's the left side of the lot looking at it from the front, no matter which side of the car you place to the front (hopefully that makes sense).