¿Por qué los camiones tienen 18 marchas y tu carro solo 6?

Why do cargo trucks need 18 gears if your car runs fine with 6? It's not a whim or unnecessary complication: behind it lies physics, money, and engineering that moves 40 tons in the most efficient way possible. In this video, I explain why weight changes everything, how that gearbox actually works inside, and why a good driver can save thousands of dollars a year just by choosing the right gear. All explained simply, with everyday examples. If you've ever seen a truck cab and wondered what so many gears are for, this video is for you. Everyday engineering, explained simply. 🔔 Subscribe for more stories about the world around us! 📌 Chapters: 00:00 - Introduction 00:42 - The Weight Problem 01:55 - The Gearbox That Isn't Just One Gearbox 03:07 - The Money Behind Every Gear Shift #trucks #engineering #funfacts