The brand isn't completely abandoning fossil-fueled motorsport, at least not yet. It's still competing in Germany's DTM series, and it has yet to decide on World Rallycross. If the rallying world moves to electric power, that will make Audi's decision easier.

This isn't a trivial choice for a company that's practically synonymous with Le Mans, and still puts in a good showing (its drivers placed 3rd and 4th in the latest 24-hour race). However, it's easy to see why Audi would make the jump. It's not just that developments in EV racing are likely to filter down to production cars. Its rivals BMW and Mercedes-Benz are also getting involved in Formula E, so there's pressure to join -- especially when parent company Volkswagen is determined to improve its image in the wake of its emissions cheating scandal. When you also consider that Audi drivers have already won Formula E races, it only makes sense to deepen the firm's involvement.