Photo: Polaris ATV and snowmobile specialist Polaris has introduced a true battlefield replacement for the original Jeep, courtesy of it's Polaris Defense division. Like that original soldier's best friend, the turbo diesel MRZR is light, compact and capable of crossing tough terrain, not to mention great looking. By way of comparison, today's Humvee and its upcoming replacement are mammoth vehicles, bloated by mission creep into armored personnel carriers rather than zippy battlefield transportation. Photo: Polaris The MRZR is a return to that original mission. Coming from an ATV background and using a smallish 875 cc twin-cylinder engine, it would...