Here is a cool vintage video that shows the making of the Back to the Future: The Ride at Universal Studios. The video is from YouTube user DacklinYoung. The video shows a much younger Steven Spielberg talking about design of the ride, some cool behind the scenes action and shows a bit of the ride itself. The ride was one of my favorite ones Universal Orlando so its cool checking out this video.
Here is the description of the video:
I've heard that an early version of the ride was being directed by Richard Edlund before he was later bought out by Douglas Trumbull's company. I work in the VFX industry and I was on a Motion Control shoot where I met the camera operator for Edlund's version. So, I guess that rumor is true.