This happened to us before! We were still on the TTC platform (getting ready to go to EPCOT.) The train hadn't pulled out yet, but everything locked up and they couldn't open the doors. People were standing there waiting for the next train just staring at us like we were a zoo exhibit (which it also smelled like, haha!) They announced that it was some sort of safety test, but....really? It was July, no AC, and we sat there for almost an hour. I felt so sick! We didn't get any explanation or anything. All of a sudden it started moving and we went to EPCOT.