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Challenger 1 is a British main battle tank (MBT) used by the British Army from 1983 to the mid-1990s, when it was superseded by the Challenger 2.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.
2-in-1 PC A 2-in-1 PC, also known as a 2-in-1 tablet, 2-in-1 laptop, 2-in-1 detachable, laplet, or simply 2-in-1, is a portable computer that shares characteristics of both tablets and laptops. Before the emergence of "2-in-1s," the terms "convertible" and "hybrid" were already in use by technology journalists. The term "convertible" typically referred to 2-in-1 PCs that featured some type of keyboard concealment mechanism that allowed the keyboard to be slid or rotated behind the back of the chassis, while the term "hybrid" typically referred to devices that featured a hot-pluggable complimentary keyboard.