Berlin (dpa) — When Mercedes engineer Klaus Millerferli holds the suspension component for the new EQXX concept car in his hands you might think something has gone wrong with the design. The metal part looks misshapen and unstructured, more suitable for the trash can than the front axle of a cutting-edge electric car. It certainly doesn’t look sturdy enough to take the weight it will have to sustain. But in fact Millerferli is very pleased with the component he’s holding, admiring its low weight and airy shape. After all, it’s not only extremely stable, but also weighs four kilos less than a c…