This post is part of a series on some of the most memorable companies that have disappeared.

America loves an underdog. And for all its 33 years, American Motors Corporation (AMC) was clearly an underdog.

The American automobile company was formed on January 14, 1954, by the merger of the Nash-Kelvinator Corporation and the Hudson Motor Car Company, in an effort to challenge the "Big Three" automakers -- General Motors Corp. (NYSE: GM), Ford Motor Co. (NYSE: F), and Chrysler. At the time, it was the largest corporate merger in U.S. history, and the new carmaker became the steward of the popular Hudson Hornet and Nash Rambler lines.

After chairman George Romney retired from AMC in 1962 to run for governor of Michigan, the company struggled to come up with a way to compete with such popular "pony cars" such as the Ford Mustang. Sticking with its strengths in fuel economy, AMC introduced the Gremlin in 1970, its most popular car since the Rambler. The AMC Pacer followed in 1975. The Pacer was wider than Gremlin and featured fishbowl windows designed to eliminate blind spots. Unfortunately, it also had a bigger engine, which ran counter to trends during energy crisis of the mid 1970s. Some blame the Pacer's failure to catch on as the reason for the ultimate demise of the company.