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Still looking for significant MECHANICAL advances in the last 50 years. As was stated earlier, automotive electronics have made significant advances, but a mechanic from the WW2 era would have no trouble with the mechanical systems of a modern car.
Show him a Prius or a Tesla and he might have to scratch his head a bit.
Not sure on the hybrids, but electric cars are nothing new. I believe they started in the 1920s. And technically hybrids have been around a long time in a sense. Electro magnet transmissions have been used, that with a gas engine is a hybrid the same as a train is one. Not sure of any old cars using an engine and motor however. I believe older cars had more style and way more engineering feats. Look into the cars from the teens to the '40s. Look hard at all and you'll see all sorts of things that have been done.
Compare that to guns. Look at a gun a hundred years ago. Some of the same guns are even made. Guns have not advanced much. Old tried and true designs are still. And I can't think of any gun not made to last. Some guns are meant to be used more than others but unlike new vehicles in 5 years you aren't stuck with a gun that needs enough work you can buy several older models for the same amount. Guns hold their value. Even cars that are now collectible, it took years for that to happen. You can buy a new gun and 10 years later it'll be worth the same usually.