Party up top, business down below—the Audi Q4 e-tron Sportback is a new electric crossover due in 2022. [credit: Audi ] The plan to rapidly electrify a post-diesel Volkswagen Group relies on a similar strategy to the plan that made it the world's second-largest automaker: design a flexible, extensible vehicle architecture, then use that across multiple brands to build a dizzying array of cars, crossovers, SUVs, and so on.