I remember in the mid-'70s, Huffy was the main instigator of those little 20" bikes, with flat-ish bars & knobby tires. I was getting too tall to ride them, but couldn't help noticing them. Especially when one of the neighbor kids had one with Evel Knievel's name on it.
I guess that one's fairly collectible now. It was many years later, before I realized Huffy was around way before that.