General Motors is one of the Big Three US automakers and the company used to have five distinct brands of vehicles under that overarching GM umbrella.
Chevrolet was at the bottom of the pile, Pontiac was the next step up and Oldsmobile was the middle of the pack. Buick was a jump up again and, sitting on the top of the pyramid – unassailable – was the Cadillac.
Bruce Dickinson spent a lot of...
