Sales of Ramblers soared in the late 1950s in part because of American Motors' focus on the compact car and its marketing efforts. These included sponsoring the hugely popular Walt Disney anthology television series and as an exhibitor at the Disneyland theme park in Anaheim, California. George Romney himself pitched the Rambler product in the television commercials.
While the "Big Three" introduced ever-larger cars, AMC followed a "dinosaur-fighter" strategy. George W. Romney's leadership focused the company on the compact car, a fuel-efficient vehicle 20 years before there was a real need for them. This gave Romney a high profile in the media. Two core strategic factors came into play: the use of shared components in AMC products and a refusal to participate in the Big Three's restyling race. This cost-control policy helped Rambler develop a reputation as solid economy cars. Company officials were confident in the changing market and in 1959 announced a $10 million (US$85,947,489 in 2016 dollars) expansion of its Kenosha complex (to increase annual straight-time capacity from 300,000 to 440,000 cars). A letter to shareholders in 1959 claimed that the introduction of new compact cars by AMC's large domestic competitors (for the 1960 model year) "signals the end of big-car domination in the U.S." and that AMC predicts small-car sales in the U.S. may reach 3 million units by 1963.
American Motors was also beginning to experiment in non-gasoline powered automobiles. On April 1, 1959, AMC and Sonotone Corporation announced a joint research effort to consider producing an electric car that was to be powered by a "self-charging" battery. Sonotone had the technology for making sintered plate nickel–cadmium batteries that can be recharged very rapidly and are lighter than a typical automobile lead–acid battery.