On Episode 38 I mentioned two different types of transportation in and near Epcot. Here is a little more info on them.
This article shed some light on the Double Decker buses that drove around World Showcase years ago!
Below is a video from someone who rode the tram way back in the 90s. This tram circled Crescent Lake and picked guests up at the Swan, Dolphin, Beach Club and Yacht Club.