What does the Challenger 2 have in common with the Challenger 1?
Challenger 2 The FV4034 Challenger 2 is a British main battle tank (MBT) in service with the armies of the United Kingdom and Oman. It was designed and built by the British company Vickers Defence Systems (now known as BAE Systems Land & Armaments).
Challenger (train) The Challengers were named passenger trains on the Union Pacific Railroad and the Chicago and North Western Railway (which was replaced in 1955 by the Milwaukee Road). The economy service ran between Chicago, Illinois, and the West Coast of the United States. The trains had full Pullman service and coach seating and were an attempt to draw Depression-Era riders back to the rails. Food service was advertised as ""three meals for under a dollar a day"."