The GM A-body was America's standard car in the 1970s. GM sold about 600,000 vehicles per month in the US in 1973; about three times as many as they do now. The car pictured was America's best-selling car for years in the form of the Oldsmobile Cutlass.
The Grand Am was the top option package for the Pontiac LeMans series. It came standard with a gas-guzzling 400 c.i. V-8 and a premium interior. It was more expensive than that year's Pontiac GTO, another LeMans option package (and a shadow of the GTOs of the past). I've never seen a Grand Am four-door before; there were fewer than 9,000 made in 1973.
