Toyota Mark X late 1960s. Instead of being based on a modified Supra chassis "A" series platform, the Mark X continues to use the Toyota "X" platform, and does not share its platform with the Toyota "S" series platform used under the Toyota Crown and the Lexus GS. The continuation of describing this vehicle as the "X" series is a reference to the first dedicated Mark II platform introduced in 1972. Major changes to the Mark series are the engine and footwork. Toyota discontinued the straight-six engines used in the Toyota Verossa, which included the JZ series and the G series engines, and
Luxury vehicle the Jeep Grand Cherokee ... the Grand Cherokee's allure: "This vehicle is proof you can have a true off-road vehicle without giving up luxuries and amenities" with the Jeep providing a crucial new intangible factor for buyers—image. The SUV models generated higher-profit-margins than ordinary automobiles, and automakers introduced new luxury models during the late 1990s, starting with Lincoln Navigator in 1997, besides traditional models like the Grand Cherokee. For some manufacturers such as Porsche and BMW, luxury SUVs were the first SUV models they produced. Luxury SUVs catered particularly to the U.S. market where station wagons were unpopular, often being