The IAA auto-show took place Sept. 7-12 in Munich for the first time.Audi A6 e-Tron Concept, Audi’s expansion of its e-Tron range of electric cars isn’t slowing down. It’s introduced the new A6 e-Tron Concept, a preview of a new all-electric variant of the A6 saloon, coming into production reality in 2023. The sleek design…