If you've ever wondered where it went after you flushed the toilet on the train, this is the answer! The days when passenger trains were allowed to just dump along the tracks are long gone. This truck pumps the waste out of the train and into the tank on the back of the truck. This particular truck doesn't look like it has been used since the last snowfall.
The photos in this slide show were taken in the mid-1990's by Steve Grande on his Amtrak travels throughout the nation. The size of the photos is purposely smaller as disk space was expensive and download speeds were slower at that time.