4 million pre-production test miles on the all-new 2014 Jeep Cherokee included some brand new, and pretty awesome, durability tests at the Chelsea Proving Grounds in Chelsea, Michigan. A stair climbing maneuver, a brand new Lateral Loads Track that put the Jeep Cherokee through countless numbers of twisting turns, and other new durability tests were added to CPG's already rigorous durability testing for the 2014 Jeep Grand Cherokee.