Report: Mercedes planning electric S-Class-sized sedan to compete with Tesla Model S

2018 Mercedes-Benz S560eAfter Tesla launched the first luxury electric car with the Model S, it relatively quickly took over the mantle as the best-selling luxury sedan. That didn't sit well with Mercedes-Benz or Audi, the prior kings of the $80,000-plus luxury sedan world. Both companies have now announced an onslaught of plug-in models. So far, Mercedes-Benz has stuck...