Hmmm. Makes one wonder. They were new buses and had darkened windows. But not one marking on them to advertise a company.
Last year, I was on a flight from Phoenix to Baltimore that included 12 illegal child invaders.
When they got to BWI, they got into a white van, dark windows and no license plates.
It made for an interesting thread here on FR. Local talk host was even talking it up the next morning.