Rainy Day favorite at school

When I was in early grade school in New Hampshire, we would go to the auditorium after lunch to watch movies. Usually if it was rainy or snow outside, it would be too cold for recess. Our principal would run this particular film (16 mm short) and would reverse the action on the projector in the scene where A&C are riding in the old car. They would go into the tunnel and meet the train coming out. Then he would reverse the action and the car would chase the train back into the tunnel. Later when I got my own 8mm projector, I got a Castle Films print of this. Then when I got my VCR, I got a complete copy of it. My favorite scene is where Costello is dreaming that he is in a sanitarium and all the crazy people walk through. Love the bit where the swaami asks him "Do you want your palm red," and then paints it red.For B western trivia buffs, the guy driving the tour bus was Bob Baker, who had been Universal's top singing cowboy. He had been in a series with Johnny Mack Brown before the studio took him out. He later made one of the Trail Blazer films at Monogram with Maynard and Gibson. Johnny Mack Brown of course at this time was the studio's leading western star.