2019 Audi e-tron quattro prototype drive - If you have read our report from the world premiere of the Audi e-tron quattro in San Francisco a few weeks ago, you can skip this paragraph. If you have not, here’s a quick rundown on what the e-tron quattro is all about. It’s an all-electric SUV powered by twin electric motors, one for the front axle and one for the rear.