For more than 35 years, the last Porsche 911 Turbo Slantnose Cabriolet ever built stayed out of public view. It's a 1989 black-on-black Sonderwunsch ("Special Wishes") commission, a one-off that closes out the 930 era. For its return, 000 Magazine brought it to Wildflower Studios, where I shot the feature alongside photographer Clint Davis.