At 17.4 feet long, the Q9 SUV is the largest vehicle Audi has ever built. At the back, curved OLED lighting panels wrap into the body in what Audi calls a world first, joined by headlights that project turn signals onto the pavement at night. The SQ9 variant runs a twin-turbo V8 making 591 horsepower and 590 lb-ft of torque, enough for a 4.0-second sprint to 62 mph through a rear-biased quattro system. Both versions tow up to 7,716 pounds and come standard with adaptive air suspension and rear-axle steering. A hands-free cruise system, another first for the brand, works at highway speeds up to 85 mph in the US, Canada, and Germany.