2016 Bentley Continenal GT Speed Black Edition Has 633 HP of Twin-Turbo Opulence

The first iteration of the Bentley Continental GT Speed debuted in 2007 with 602 horsepower. Then came an update in 2012 with 616 horsepower to play with. Then the 2014 Bentley Continental GT Speed upped the ante to a meaty 626 horsepower, more than the 2010 Bentley Continental Supersports. Fast-forward to the present day and here we are in the presence of yet another Continental GT Speed. This time around, the Crewe-based automaker squee…