Dispense with the SUV pretensions right now — ABT Sportsline's Audi RSQ8 Signature Edition aspires to nothing but pure on-road performance. ABT brought on a cadre of racing drivers to tune the RSQ8 to be a street-legal race car without sacrificing the Audi's luxury appointments. Under the hood, the 4-liter twin-turbo V8 has received an extensive makeover, now making 800 horsepower and 737 lb-ft of twist. The additional 200 horses and 150 lb-ft of torque are good for a 0-60 sprint of 3.2 seconds and a top speed of 195 MPH. The bodywork has been subtly refined for improved aerodynamics with carbon fiber side skirts, wheel arches, front splitter, rear diffuser, and bespoke forged wheels. The interior has seats with the ABT logo and embroidered "Signature Edition" and badging. ABT is making 96 units — and they've all been sold.