DURING the ructions of the 2008 economic downturn, not only was the embryonic WJ Jeep Grand Cherokee at risk of failing to reach production, but also the Chrysler group itself nearly keeled over. With the humiliating publication of highly confidential WJ design sketches and the many ups and downs of a company facing oblivion, it is a surprise Jeep got the WJ out at all. Instead, the upheaval seems to have galvanised the company, because the WJ Grand Cherokee is one of the best Jeeps yet.