What the hell trains are you guys riding. I have never seen anything dreadful or smelled anything bad on any of the trains, that were inherently just a monorail problem, I have ever ridden. Is this an imaginary thing? And if you are going to include pictures to prove a point be sure that it isn't a pile of junk left on there by another guest. Disney has time to clean everything at night, not while they are running and slob guests leave their calling cards.
There have been plenty of pictures posted here showing the problems with the interiors.