The Pikes Peak organization doesn't list "Production Car" on its list of records. The closest we could find is a record run of 10:26.896 set by David Donner in a 2014 Porsche 911 Turbo S in the Time Attack 2 class. It appears a production car only needs the necessary safety gear like a roll cage and fire extinguisher to qualify for Time Attack 2. An Acura NSX won the category in 2016, just two seconds off Donner's time.
Bentley is already working on its run and likely has simulations showing it can outdo Donner's time, but this will be a battle of lean vs. largesse. The Continental GT has all-wheel drive like the 911 Turbo S, and one more gear in its eight-speed dual-clutch gearbox compared to the Porsche. The Turbo S put out 560 horsepower and 553 pound-feet of torque, compared to Millen's ride getting 626 horsepower and 664 pound-feet of torque. But the Bentley weighs roughly 1,400 pounds more than the Porsche, a healthy handicap to drag up to the 14,115-foot summit.
Millen's the man to make the attempt, though, having raced up the mountain 25 times and taken five overall and seven class victories. The race goes down - or up, rather - on June 30.