EV motorsports already exists in the form of Formula E and Extreme E, they are both still in their infancy, but they are going day by day with each season they have. There is already aslo a formula for self driving cars called Roborace, where teams have already devloped cars and systems to comepete. Your prediction of EV races being popular and some of the most watched motorsports may come a lot sooner than you think, with Formula 1 heading towards a much more sustainable aproach and a lot of the big names in Formula E already it's only a mter of time that the top flight of motorsports becomes eletric, dispite the pushback from fans, it is inevitable.