Goof: When Tinker and Speedy take off from the start line as their race begins, the same cars racing against them (notice the numbers) pass the screen several times making it seem that there's more of them in the race.
Mark: You won't be safe as long as you have that formula, Debbie. Give it to me.
Debbie: Then you won't be safe, Mark.
Mark: No, I'll hide it under the seat. (Puts the paper with the formula under Speed Buggy's seat)
Tinker: Golly! Now we won't be safe.
Speedy: (sputters) You're putting us on the hot seat.
(The villainous Abdul, disguised as a police officer, chuckles as she and Mark approach)
Mark: A professor friend of ours has been kidnapped by an invisible man.
Debbie: He's very dangerous. He's about so...His hair is...His eyes are...Oh, how do you describe an invisible man?
This episode bears many similarities to the Josie and the Pussycats episode "X Marks the Spot". Both have an invisible villain looking to rule the world and both evil men utilize an interrogation machine that forces their subjects to tell the truth.