Chicago, Illinois. The Chicago and Northwestern Railroad runs a special service in these freight cars marked "X" between Chicago and Milwaukee. The cars are loaded with goods in proper order on these hand trucks. The cars are sent on to Milwaukee, trucks and all, are unloaded there, trucks reloaded, and shipped in the freight cars back to specified tracks. By setting aside special tracks at both ends, and keeping the goods in proper order for unloading, a great deal of time is saved