It is fairly amazing how often we see vintage photos of Frontierland with old automobiles or other anachronisms in plain sight of the guests. There is a story in which Walt Disney gave one employee a scathing reprimand for parking his car in what was supposed to pass for the 1880's. In this photo we see a boat with an outboard motor zipping along the Rivers of America in broad daylight. What gives?
To the right we can see that Castle Rock is still surrounded by scaffolding. In the foreground is what I believe is the old load area for the Stage Coach.