Less than a month from now, Mercedes CEO will reveal the company’s new GLC EV at the Munich IAA and tell the world how this fast, long-range SUV with the retro-futuristic illuminated Benz grille will drive the three-pointed star into the 2030s. But separately, Ola Källenius is calling for an urgent rethink on EU legislation that will force buyers and carmakers to go electric by the middle of that decade.