I've always loved Chitty Chitty Bang Bang, though the last time I watched it, I saw several scenes that were brilliant. For instance, Truly Scrumptious accidentally driving her car into a swampy pond. This happens three times, and they all involve the Potts family. The first time, Truly swerves into the pond to avoid hitting Jeremy and Jemima Potts. Truly drives them back home and also wants a word with their father, Caractacus. During her meeting, she sees the candy which will soon become "Toot Sweets", which she even helps Potts show to her father, the candymaker Lord Scrumptious. That went well until the whistling accidentally attracted dozens of dogs into the factory. The second time, she does this as the Potts family is taking their new car, dubbed "Chitty Chitty Bang Bang" for a test drive for a beachside picnic. Coincidentally, "Chitty" was made from the old car that Jeremy and Jemima were on their way home to tell their father about as Truly almost drove them down. Truly is invited by the Potts children to join them, and it's during this trip that she develops affection for the children and Caractacus. The third time, she was on her way to tell Caractacus that her father will sell the candy, though they'll be marketed as "Woof Sweets", candies for dogs. Nevertheless, Truly and Caractacus share a passionate kiss, after which decide to marry one another. - Premonition45
A lot of the Vulgaria sequence seems over-the-top nonsensical and cartoony, even by the standards of a children's movie (A country where children are illegal? One of the imprisoned scientists was stretched several feet taller? The spies swam all the way back?). Then you remember, it's a story Caractacus is making up to amuse his children. They may have some Fridge Logic about it later, but right now, they're definitely entertained.
The "Doll On A Music Box" sequence actually summarises the relationship between Caractacus and Truly fairly well. Truly is the "stiff and rigid" doll, who has to meet class standards, while Caractacus is more easygoing and flexible. The slaps by Truly, while accidental, show that Caractacus's meetings with Truly were mis-timed ones. He gets a glimpse of himself in the mirror and realises what a fool he is, but Truly smacking him gets him back to the man she loves. At the end, he goes to take her hand, but her class standards seem to prevent this.
Chitty Chitty Bang Bang: We knew in the movie that the Child Catcher's duty was to capture any child he could find. But in the stage version, according to the Toy Maker, the Child Catcher goes beyond catching as many kids as possible, by making them "disappear".
One can only imagine WHY he carries around that hook to begin with...
It's like a shepherd's crook. There's a child around that corner? *yoink*
The Baron and Baroness hate kids. If the Baroness ever got pregnant, what would they do with the kid once it was born? I'm assuming there were no pregnancy prevention methods in Vulgaria. Am I over-thinking things?
Considering the Baron can't stand the Baroness (to the point of trying to kill her repeatedly), and she's the one who instated the ban on children (after one called her ugly), it's likely they have a very chaste relationship.
There's always been herbs and things used to "regulate periods" (read: cause an abortion). She could just use those if she ever got pregnant, or pre-emptively take some after she and the Baron gave some special alone-time.