There are a couple milestones which were achieved with this Disney cartoon. First, it was the first time Donald, Goofy and Mickey were teamed up for a film. And, thoughout the rest of the 1930s, the trio would become about as familiar as FDR and the Depression. Second, it's the final black & white Disney cartoon.
The trio all work for a service station. An armed and dangerous Pete arrives and tells them they have 10 minutes to make his car stop squeaking or, he implies, he'll kill them!! So, they do as you'd expect...and make a mess of things. After all, Donald and Goofy are involved. So what's Pete really gonna do?
This is a good though not great Disney short...which still makes it far superior to its competition. While it has lots of milestones, its quality is no better than any of the team's later work. Very watchable and enjoyable...but not their best stuff.