5. Pontiac Can Am
Back in the late ’70s, the American performance car segment was a pale shadow of its former glory. But in 1977, Pontiac introduced the Can-Am, the one-year-only model that was the last true muscle car with big-block power packed in a unique body style and white color.
Under the hood scoop from the Firebird Trans Am, there was a big 455 engine with 200 HP. That was more than any other muscle car on the market at the moment. The Can-Am package consisted of special rear window louvers, a rear spoiler, and a long list of special optional extras. They introduced the car early in 1977 and the market responded well. In fact, Pontiac received between 5,000 and 10,000 reservations. But in the end, they only sold 1,377 Can Ams, ranking it among sales flops of the decade.