'But for Vanadium there would be no automobiles' – Henry Ford.
In order to make a low cost car for the people Ford had to source good, durable but cheap materials to use in it. He came across a part of a valve spindle of a wrecked French car in a race in Florida, it contained Vanadium and was surprised at how light yet hard it was. There were just a few percent of Vanadium in the steel and he decided it was the perfect material for his inexpensive mass-market car. Production using Vanadium began in 1913 - with many of the parts made from Vanadium Steel, and as you saw in this interesting video, he eventually produced over 15 million of them. By the time it was discontinued in 1927.
I read this just last week in a Periodic Table book I recently bought.