CWT traces its origins back to the 1870s ' invention of rail sleeping cars and the creation of Compagnie International des Wagons - Lits by Belgian Georges Nagelmackers .
CWT is a privately held travel management company , wholly owned by Carlson Companies .
Tracing its origins back to the 1870s ' invention of rail sleeping cars and the creation of Compagnie International des Wagons - Lits by Belgian Georges Nagelmackers , CWT is a privately held travel management company , wholly owned by Carlson Companies .