Which automotive company was the first to mass-produce a car with a unibody design (where the body and frame are integrated into one unit) rather than using the traditional body-on-frame construction?

The transportation industry has seen remarkable product innovations that have transformed how we move people and goods. From breakthrough vehicle designs to revolutionary safety features, these innovations have defined modern mobility. This trivia question tests your knowledge of a significant product design milestone that changed the transportation landscape. Can you identify which company pioneered this game-changing innovation?

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Lancia, with the 1922 Lambda
Ford, with the 1936 Lincoln Zephyr
Chrysler, with the 1941 Plymouth Special Deluxe
Nash Motors, with the 1949 Airflyte