In 1956, GM's Pontiac Motor Division was close to death. Its sales were down, its market share declining, and its image at a low ebb. That summer, however, help arrived in the form of Bunkie Knudsen, Pete Estes, and John DeLorean. Together, they lifted Pontiac out of its mid-fifties doldrums and put it on track for its unprecedented success in the 1960s.

This week, we look back at the reign of Bunkie Knudsen and the birth of the legendary Wide-Track Pontiacs.

Click here to read more about Bunkie Knudsen and Pontiac's late-fifties renaissance

We're going to take a different approach for this week's article. Instead of presenting another history, we've decided to give you a look at the way we approach the research for these articles, and tackle a challenging comment posed by one of our readers: did inventor Oscar Banker design the 1937-1939 Oldsmobile/Buick Automatic Safety Transmission, the predecessor of Hydra-Matic?

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The words "sporty Buick" have never quite rolled off the tongue, but over the years, Buick has produced a surprising number of performance cars, from the speedy prewar Century to the turbocharged Grand National and GNX. From 1965 to 1975, it even offered its own entry in the burgeoning Supercar market: the Skylark Gran Sport.

This week, we take a look at the history of Buick muscle, and the career of the Skylark Gran National, GS400, GS455, and GSX.

Click here to read more about the Buick Gran Sport