We went up this road where a lot of gravel trucks were hauling loads of gravel. The first incident was when one of these jerks thought it was funny
to blast his horn while passing each bicyclist (we were all on the side of the road, not in traffic, on the other side of the white line)
The next truck passed us peacefully, and my heart rate went back down. THe next guy thought he was funny too, and moved his giant vehicle as close to the side of the road as he could without crossing that white line. We know it wasn't because he was drifting because we watched as he did it to the next group further ahead.
after 10 miles on that nasty road; we turned and went into beautiful hilly country, in the foothills of the northern cascades.

On Monday I called the trucking outfit and spoke to the owner. he was very
concerned and friendly and said he was surprised because those truckers
were all very experienced and knew better. He said he would get back to me today. I'll let you know.