The noisiest part of this Mercedes-Benz off-road wagon was the squeal from the 37-inch tyres on winding sealed roads in Spain, say photographers from spy agency Automedia. Rubber meeting the road as the lightly camouflaged prototype G63 AMG Gelandewagen went from one off-road test track to another drowned out the exhaust burble from its twin-turbocharged 5.5-litre V8 … [Read more...] about Benz paints its latest wagon as a plaything for the mega-rich