- The model year of Volkswagen Beetle used for Herbie shifts back and forth throughout the film. It's most visible when the side rear windows change size from smaller (1963) to larger (1966).
- The GAF Viewmaster reel set shows a picture from a deleted sequence where one of Alonzo Hawk's nightmares has him being treated by VW Beetle doctors. The "doctors" have a red cross on the hood and the headlights have "pupils." The "doctors" have mechanical arms that hold welding torches and other mechanical tools. The scene was probably deleted because it would have been too scary for kids.
- Unlike _Love Bug, The (1969)_ , in which all VW logos were removed from Herbie, Disney worked closely with Volkswagen to promote the sequel. 300,000 Herbie posters were distributed to dealers to pass on to their customers and each VW dealer had a Bug on display that was made up to look like Herbie. Plus, if a customer wanted to turn their new Beetle into a Herbie they could purchase a graphics kit from the VW parts department.
- The original choice for the lead character was Walter Brennan playing Grandpa Steinmetz. His untimely passing prevented this so the studio cast 'Helen Hayes' as Grandma Steinmetz instead.
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