After the classic Buick I mentioned yesterday, I had to pull up another classic from GM:
1958 Pontiac Bonneville. Smack dab in the middle of the "chrome roamer" time period (or "lead sled", if you will). '58 is important, as it was the first year the "Bonnie" was its own car, not part of the Star Chief line, and was the Indianapolis 500 pace car in its introductory year. It would see many permutations over the years, changing to front wheel drive in the 1980s and finally getting dropped from the Pontiac line in 2005, five years before the brand itself was axed by General Motors.
While today a 370 cubic inch motor putting out 300 horsepower might seem inefficient, for the time period it was pretty hot rod stuff. The Chrysler 300 is often referred to as the granddaddy of the muscle car movement; the comparable 300D in '58 had a 392 CI motor putting out 380 HP. A roughly 1:1 cubic inch:horsepower ratio was the holy grail of hot rodders and muscle cars; today that's seen as a down-tuned motor.
But the cars of the 1950s had style, baby...
That is all.