What does the Challenger 2 have in common with the Challenger 1?
Challenger 1 The FV4030/4 Challenger 1 is a British main battle tank (MBT) used by the British Army from 1983 to the mid-1990s, when it was superseded by the Challenger 2. It is also currently used by the Royal Jordanian Army as its main battle tank after heavy modifications. The variants for the Jordanian military are to be upgraded using the unmanned Falcon turret.
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"."