.......Still there and an historic ride to boot. Usually not super long lines either - if there are it moves quickly! That was Disney's first ride and was introduced at the World's Fair in NYC in 1964. You can actually download the theme song from some the music sharing programs out there, not naming names....
".... The Carousel of Progress was Walt's own idea from beginning to end. He loved it. He introduced the show at the World's Fair in New York City in 1964 and it was an immediate smash hit. Millions of people came to see it and since then, the Carousel of Progress has had more performances than any other stage show in the history of American theater........"
http://en.wikipedia.org/wiki/Walt_Disney's_Carousel_of_Progress
It doesn need a good cleaning but is probably one of the few remaining Original attractions left at WDW in Orlando. Most everything else has been updated and revamped.... My DS 6, loved that ride and sings the song all the time! It brings back fond memories of our trips.