An audioanamatronic is basically an electronic puppet. It can move it's eyes and mouth, make some body movements, but that's about it.
I personally like the photo idea. When I went in May, I mentioned the hitchhiking ghosts to my 6 year old nephew. He wasn't sure if he wanted to ride it or not. He eventually did. Later we rode the ride together. I had to make sure I was in the same doombuggy because I wanted to get his reaction to the ghost in the vehicle. Classic!