AH, THE 12-CYLINDER. The epitome of automotive grandeur, it’s an engine that requires two hands to assemble, yet three to tally the piston chambers. By and large, a 12 has the potential to produce more horsepower and torque than its eight- and 10-cylinder counterparts, yet in a manner as smooth and rewarding as 50-year-old Glenlivet. Save for the outrageous 16-cylinder that rockets the $1.4 million Bugatti Veyron 16.4, the 12-cylinder is the engine that best symbolizes wealth and power. Scan the list of automakers offering one—Aston Martin, Audi, Bentley, BMW, Ferrari, Lamborghini, Maybach, Mercedes-Benz, and Rolls-Royce—and it reads like a CEO caravan. Moreover, the average base price for a 12-cylinder automobile is nearly $250,000. No doubt, these vehicles are meant for affluent buyers who binge on beluga and down the…