In the early 90s there was a tram with stops at the Epcot International Gateway, Dolphin Hotel and Yacht Club Hotel. The route traveled along the boardwalk during the construction of the Boardwalk Resort. Below are two videos and stills. First up some video from onboard, then a look at the trams from the Swan Hotel.
Here is some video from a trip from Epcot to the Dolphin –
Here are some still images from the video:
Here is a look at the trams from my room at the Swan Hotel. You can see the two trams, one from Epcot and one from the Yacht Club. They cross on the Boardwalk.
Other video posts from my 1994 Walt Disney World Trip: