Truck & engine maker Navistar operates three specially-designed trailers -- euphemistically dubbed "Educators" -- and puts two on the road at any one time for 30 weeks at a pop to provide its major fleet customers with technician training support. At the 2013 Rush Truck Centers Technician Skills Rodeo in San Antonio TX last December, Wayne Kosko, Navistar's service education manager, gave Fleet Owner a tour of one of its "Educator" trailers.