Around 10 hours in, I was riding to a mission alone. As I came to a bridge, a bunch of men on the other side shouted at me to stop — they were from the O'Driscoll gang, and I had better turn around.
So I turned around, went into the woods nearby, and found another way to cross the valley beneath the bridge. Then I snuck back around to where the O'Driscolls were hiding — the arch rivals to Arthur's Van der Linde Gang — and quietly took out each one. Since it was the middle of the night in a remote part of the map, no one happened to be riding by. That's good, because just one witness could mean trouble.
I carefully hid the bodies — after looting each one for ammunition and treasure — before realizing I had a horse carriage on my hands. I unhitched the horses from the front and told them to get out of there, carefully took aim at the oil-burning lanterns on the side of the cart, and fired.
And that's the story of the cart on fire.
It's a great example of the kind of emergent, unexpected moments you'll find in "Red Dead 2." This is just one of many such stories from my time with the game.