I have made a career scenario and set up a cinematic camera for the intro sequence of the scenario as a test. I created the code inside the script menu in timetable view, but for some reason, it wouldn't work. Here is my scenario script, I named the camera "IntroPart1". Here, I used the trigger instructions to create the events shown in the script. Its supposed to start immediately when I press play, but the camera wouldn't start or go into the cab. It just stays in 3rd person front view.
Probably down to the latest and final "stable" build, I'd recommend reverting to 75.8a build as everything just works in that build, there are guides here on how to do so.