Which military product launch from the 1940s initially received the code name 'Project PX' before becoming widely adopted for civilian use and revolutionizing numerous industries?

Throughout history, certain military products have not only revolutionized warfare but also transformed consumer markets. These innovations often began as classified military technologies before finding their way into civilian use. This trivia poll explores one of the most significant military product launches that later impacted civilian life. Test your knowledge about the intersection of military innovation and product development!

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ENIAC (Electronic Numerical Integrator and Computer) - the first programmable, electronic, general-purpose digital computer
M1 Garand rifle - the first semi-automatic rifle to be generally issued to infantry
Penicillin mass production system - the military-funded antibiotic manufacturing process
Jeep (Willys MB) - the lightweight four-wheel drive military utility vehicle