The G-Class SUV is the dinosaur of the Mercedes range and one of its most-loved models. Until now the only thing missing was electric urge. Virtually unchanged on the outside, Mercedes has modernised this off-roader with its iconic garden shed aerodynamics time and time again, but it never really moved with the times. Now they have taken a big leap by converting the G into an EV as part of an injection of fresh cells that should ensure its place for years to come. They could have called their would-be eco-growler an EQG, in line with the new nomenclature, but decided to badge this old-school r…