That’s part of what’s so weird. Usually there’s video from bystanders but we get this one clip and that’s it. If it was Hillary, I’d believe it was before the event.
I was in front of that building in May and there’s no way a motorcade would have been missed. Maybe they have a garage entrance, but even then you’d think someone would have seen them arrive. A presidential nominee’s motorcade complete with an ambulance isn’t routine.