I'm not sure either seeing that:
- Current game, disabled AD, still broken;
- New game, VS only, works;
- New game, VS and AD, works;
- New game, tried adding all the AD modules to the car, sent it around on auto-paths, teleported it with Gizmo's, and couldn't get it to break. I tried creating a straight track to get the "Watch out a train!" message, but it never fired. I almost got smoosed a few times both in manual and autodrive and train detection never worked. Hah, an issue for another day.
Finally:
- Current game, disabled VS, made save, enabled VS and now it works.
This leads me to believe VS's internal state got messed up. I'll watch for something prior to it getting messed up. That's why I tried the train stuff before, because trains cause sudden car movement, like teleporting and bouncing--not to say that AD is involved at all, anymore. It's the new variable to vehicle control so I'm like a dog with a bone. :)