Another vehicle keeping in Jeep's tradition of producing an SUV for three decades is the Cherokee. It was introduced as a 2-door version of the Wagoneer and competed with other large SUV's like the Bronco and K5 Blazer. A 4-door version was added a few years later, which very closely resembled the Wagoneer without any of the fancy trim. The second generation of the Cherokee would be much smaller than the first, employing a unibody design rather than chassis on frame. This would set the tone for future SUV's in the market, because it took a sizeable bite out of total car sales without displacing sales of trucks. However, all good things must come to an end. After almost twenty years of production with few updates, the aging Jeep Cherokee was retired and replaced with the Liberty. Fun fact: Jeep Cherokee parts were extremely durable, leading the publisher Kiplinger to call it one of "10 cars that refuse to die", along with the BMW E30, Geo Prizm, and all Subaru wagons.