Season 4

During WWII, a struggling automaker and Detroit's industry titan race to build a revolutionary all-purpose military vehicle, then spend decades battling to reinvent their wartime creation into America's most popular type of car: the SUV.

A showman named Mark Goodson and a former nightclub singer named Merv Griffin wage a three-decades battle to reinvent the television game show, creating franchises with spinning wheels, buzzers, and catchphrases that become ingrained in American culture as billion-dollar global brands.

A husband's homemade bandage, a college dropout's breakthrough adhesive, and a factory worker's wartime fix transform simple strips of tape into indispensable American icons - creating a $90 billion industry, one sticky invention at a time.

A down-on-his-luck mechanic transforms outlaw moonshine racing into a major American spectator sport, overcoming rivals, setbacks, and financial crises to build a billion-dollar sports empire.

P.H. Hanes sparks a revolution in American underwear, but rivals answer with breakthrough designs, bold branding, and a wartime windfall—transforming an unmentionable necessity into a $100 billion global industry.

A pair of garage tinkerers, a copier company's secret lab, and a college-dropout programmer spark a decades-long battle for the future of computing - shrinking the computer from a room-sized machine to the device billions carry every day.