Lincoln is just now launching the third Navigator to be equipped with an independent rear suspension, and yet we’ve got a couple years before Cadillac finally responds with IRS and/or air suspension in its much-anticipated fifth-generation Escalade. Despite having most of the decade to develop the ’20 Escalade—the “all-new” 2015 model was more an evolutionary update of the ’07, hobbled by General Motors’ 2009 bankruptcy —it is rumored that company brass approved ditching the solid rear axle on its most profitable model late in the program. So the Escalade, its long-wheelbase ESV variant, and the less-expensive Chevrolet Tahoe/Suburban and GMC Yukon/XL brethren finally will offer a flat cargo floor. No more lifting out the heavy third seat before you head to Target.
The change to IRS came so late, in fact, that the Escalade has been
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