Back when people were taught to fix and build things...

Looks like '67 Barracudas, at the start of the competition, high school students running to the cars & the guys in suits are the Chrysler guys and/or auto-shop teachers.
Buddy of mine was a finalist in '69, and they had Road Runners, IIRC.
He's pretty much a Chevy guy, but also a racer, fabricator and restorer of vintage race cars.