Here's something I hadn't heard about until today - back in 1960, a car dealer took three new Corvairs along with a couple 4wd Chevy trucks as support vehicles, and tried to drive through the Darien Gap between Panama and Columbia. There's a documentary film about it:
https://www.youtube.com/watch?v=ghgRH9m2fOI
According to this guy in a video from today, one of the Corvairs was left behind in the jungle and is still there to this day:
