The Beijing Motor Show saw the unveiling of the latest in German automotive technology, Audi’s newest brainchild, the A6 L e-Tron. The company’s first luxury-class e-tron concept vehicle, the new  model is based on the long-wheelbase version of the standard A6 and uses a hybrid powertrain found under the bonnet of the A8 Hybrid. However, the e-tron concept [...]