Under the hood is a 6.6-liter twin-turbocharged V-12 that makes 563 horsepower, so the Dawn is as fleet as it is sexy. It moves gracefully, albeit deliberately, and cossets its occupants when driving over even the harshest potholed roads. Even the eight-speed automatic transmission is tuned for tranquility; it uses GPS to predict when and where it should change gears based on whether the car is going uphill or downhill or going around corners. Clean CARFAX. 21'' Forged 14 Spoke Part Polished Wheels, Drivers Assistance Systems One Including Lane Deviation Warning, Head Up Display, High Beam Assistant, Front Ventilated Seats, Door Contrast Feature with Stitching in Black, RR Monogram to all Headrests in White, Seat Piping in Black, Contrast Stitching in Arctic White, Bespoke Interior, 6.6L DOHC Backup Camera, Bluetooth, Heated Seats, LED Headlights, Leather Seats, Memory Seat, Navigation System, 18 Speakers, 4-Wheel Disc Brakes, ABS brakes, Adaptive suspension, Air Conditioning, Alloy wheels, AM/FM radio: SiriusXM, Anti-whiplash front head restraints, Audio memory, Auto tilt-away steering wheel, Auto-dimming door mirrors, Auto-leveling suspension, Automatic temperature control, Brake assist, Bumpers: body-color, CD player, Compass, Convertible roof lining, Delay-off headlights, Door auto-latch, Driver door bin, Driver vanity mirror, Dual front impact airbags, Dual front side impact airbags, DVD-Audio, Electronic Stability Control, Emergency communication system: Rolls-Royce Assist, Exterior Parking Camera Rear, Four wheel independent suspension, Front anti-roll bar, Front Bucket Seats, Front Center Armrest, Front dual zone A/C, Front reading lights, Genuine wood console insert, Genuine wood dashboard insert, Glass rear window, Heated door mirrors, Heated Front Bucket Seats, Heated front seats, Heated rear seats, HVAC memory, Illuminated entry, Integrated roll-over protection, Knee airbag, Leather Seat Trim, Leather steering wheel, Low tire pressure warning, Memory sea