When water rushes out of the bus as Francis explains they've started having 'unusual leaks', the camera pans out as the water knocks down the bus driver. This wide shot reveals that several windows on the bus are down, as they don't have a light glare, which means the water would not have stayed inside the bus.
During the opening scene, Frances Bacon McCausland describes Middleburg in the middle of the country, but if you look closely at the city background, you can obviously tell it's downtown Salt Lake City, Utah on the UTA Train Trax and in the background is the former First Security Bank skyscraper, and another building is Salt Lake City Hall Clock Tower. This 1999 Disney Channel movie was obviously filmed and located in Salt Lake City Utah and not in Middleburg Virigina.