How smart are so-called smart cars, really? Ezra challenges Audi's self-driving RS7 to a track battle to find out. Robby cuts the wheel toward the apex of Turn 1, corrects a moment of under-steer, and powers out to the edge of the track with tires howling. This is a 560-horsepower machine - an Audi RS7 - on Sonoma Raceway, a fast road course scrawled across the hills of Napa wine country in northern California. We're on our way to something like a two-minute lap time, which is seriously hauling butt. Robby really knows this car. Actually, Robby is the car.
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