Wikipedia
Omnimover
The Omnimover is an amusement ride system used for Disney theme park attractions. Roger Broggie and Bert Brundage developed the system for WED Enterprises, which patented Omnimover in April 1968. The term was coined by Imagineer Bob Gurr and is a portmanteau of OmniRange and PeopleMover. Outside of Disney, it is known as an Endless Transit System.
The ride system was developed for Adventure Thru Inner Space, a Disneyland attraction that opened in 1967. It was then used in Disneyland's Haunted Mansion attraction, where the clamshell cars were nicknamed Doombuggies.