Not legally, certainly. The buses have to stop at traffic lights and stop signs. In past attacks, the trucks have been hijacked and the driver killed. It's obviously a nightmare scenario, but you'd think with recent horrific events in the news, Disney would be tightening security, not loosening it. And don't food delivery trucks remain backstage? You don't exactly see them parading through the park. I thought that was the whole point of the backstage area--to maintain the magic. I just think if they want to implement an express system, they can do with without letting buses into the park by adding express lines for people with a special pass. Heck, add a dedicated bus if it makes them feel special. They can even have a second dropoff point at the backstage area. All of this can be done without bringing buses into the actual park. Ah well.