That's a really complicated issue. Like a lot of things you're looking at, there isn't one industry here that you're talking about. There are all kinds of different facets of people who operate motorcoaches, school buses, scheduled services versus charters. On scheduled service, so the Greyhound bus, there's unlikely to be another person on there to check out whether people are wearing their belts or not. As for school buses, yes, you can put a monitor on, as Phil suggested, and that's a great idea. It's easy to do—again it's a different market—because you only have one payer, the government. The government is the client for school bus services, so it can say, “Look, we're the client. We want this.” The school bus company will say, “Fine. The cost is x.” You negotiate, and then you can add it. So, it's easier to do because you're the client.
With regard to a charter service, you would have coaches for hockey teams and teachers for school trips, so on a lot of charters, there actually probably is another person or a tour guide.
The answer to that question depends a lot on what that bus is being used for. Is it a scheduled service? Is it a charter? Is it a school bus? Who's operating it? On most charters, I would say that it's probably the responsibility of the tour guide or the coach or whoever arranged the tour. On the 2 a.m. Greyhound from Saskatoon, there's just the driver.