This attraction is original and exclusive to Disneyland CA.
Prior to the Caterpillar car, Imagineer Claude Coats had proposed a ride vehicle made out of the various playing card soldiers from the film, with the front-facing card donning a similar facial expression to what is worn by the aloof Caterpillar now. Walt Disney disapproved this concept, suggesting instead a vehicle modeled after the Caterpillar. Upon completing the design for the new Caterpillar car, Coats was informed by Disney's legal department that he needed to apply for a patent for the vehicle. Coats attempted to convince them that the patent belonged to Walt Disney, who had suggested the vehicle's design, though the department insisted that it was Coats who was ultimately responsible for the look of it, as he had actually drawn the car.
Coats applied for the patent on May 8, 1959, and it was approved by the United States Patent Office on January 12, 1960. It is designated as patent #187,036 and had a term of 14 years. A few days after the patent was approved, the legal team returned to Coats and told him to sell his patent to them for $10, which he did. Coats' son, Alan Coats, still has the original patent paperwork in his possession.
The original ending looped down, down, down until the end.
In the updated version, the vehicles leave the ride building's second floor and descend down a winding path on a giant vine past the ride queue, before heading to the final scene at the Mad Tea Party. After the Mad Hatter and March Hare sing "A Very Merry UnBirthday", Alice proclaims that it is her unbirthday too. The White Rabbit ducks as a giant unbirthday cake with a dynamite candle explodes and the ride vehicles exit to the unload area.
Growing up in Los Angeles in the 70s/80s we visited Disneyland on a regular basis and often after school, before "Annual Passes".