There are quite a number of continuity errors in "The Spooky Case of the Grand Prix Race," which Mr. Neither pointed out for today's fun fact!
When Car #78 is kidnapped by the Phantom Racer, it's sitting in the front of the pit at 11:30. Moreover, the re-painted cars suddenly revert to their original paint job at the end, where you can notably see car #78's number, which should be scratched out. Another minor animation issue is that Velma looks at Daphne and asks her if she was okay. However, this doesn't make sense, as she was with Daphne and Fred the whole time, and she should have asked Shaggy and Scooby this since they had just rejoined the group in a panic.