With fewer than 100 examples sold, the R8 E-Tron launched back in 2015 was far from a commercial success. However, Audi never really gave up on the idea of an electric supercar. In 2018, it presented its vision of a high-performance EV with the PB18 E-Tron pictured here. A production version sadly didn't follow, but the Four Rings are once again willing to talk about a zero-emission R8 with a potential launch date later this decade.
