But did the friend know this was David’s truck? Did the friend notice that it was still full of pigs? It was dark, and due to the wording of “nearly collided” with the truck, I’d guess the truck lights weren’t on. I don’t live in rural Iowa but rural Indiana and have encountered tractors/farm equipment in a similar fashion. I didn’t almost hit it because it wasn’t fully dark yet, but there was a huge tractor pulled maybe 1/4 of the way off the road, blocking my lane completely. Nothing nefarious was happening, it’s just where the tractor ended up at the end of the day I guess. I didn’t report it, but if I had had that experience and then heard soon after that a farmer was missing, then I’d have reason to. Also, if the friend was a woman, that’s even more reason to not investigate (as in stop the car, get out) an abandoned semi on the side of a rural road in the dark.
All JMO/E, I’m just saying that it’s totally possible that not reporting the truck immediately was innocent.