The engineers from Mercedes and AMG seem to be going crazy again (good crazy) after the ‘Green Monster’ G63 AMG 4×4 was spied testing. Thanks to WorldCarFans, we see what looks like the 6×6 beast but with only 4 wheels. These wheels are rather large and hence need an angry-wide body kit to match. Power will likely be from the twin-turbo 5.5-litre V8 that pushes out 536 horsepower and 760 Nm of torque. No official word yet but by the looks of things and speculations, the model will be out early next year.