The first Jeep was the Willys Overland MB, introduced in 1941 as a reconnaissance vehicle in World War II. After the war a civilian model was made available, the CJ. The first Willys Jeep Wagon was built from 1946-65. Replaced by the SJ Wagoneer, built from 1963-91. The Grand Cherokee replaced Wangoneer in 1993. The first generation, the ZJ, built from 1993-98 The second generation, the WJ, built form 1999-2004 The third generation, the WH, built from 2005-2010. This is the 4th generation Grand Cherokee, introduced in 2011, now quite a luxurious, high tech SUV featuring independent suspension and Quadra-Drive 4WD system. 2014 saw an update model, a new front end with a revised body-coloured grille, new, smaller headlamps, and new tail lamps The models are the Laredo, the Limited, the Overland, and the Overland Summit Edition model has been renamed Summit. The performance model was the SRT