The Autopia, one of the premire attractions at Tomorrowland, opened shortly after Submarine Voyage in I believe 1959. It was one of the three, with two being extinct. The first one was the Tomorrowland Autopia. The next was the Midget Autopia, which would become the Fantasyland Autopia and merge with the Tomorrowland one. The last was the Junior Autopia, which was shipped off to Walt Disney's home town of Marceliene in Missouri. After a couple of years, that was finally removed and one car salvaged for display on the main Autopia. This current Autopia, along with the dormant PeopleMover tracks and monorail support, aside from the new version, is what is keeping the remnants of the Submarine Voyage alive. Different versions exist In Florida all the way to Hong Kong, under different names.
This is a VisionsFantastic production. I never got a video of the Autopia.