Head gaskets are serious repairs. Newer cars have much better cooling systems than older ones. Sorry to here of your breakdown.
I used to get responses from truckers a decade or more ago. Usually just a tap on the horn, but one memorable time a lady stuck her head out the passenger window and started enthusiastically waving at me. She popped her shirt down to show her support. Are maybe she was communicating something else. 😉
I don't look for opportunities to be seen, and cover for most buses, but otherwise focus on the road and my experiences, let others do the same.
Back in the day, in my '66 F100, driving to Rifle, CO, for work. I was following a gravel truck when my heater started blowing warm, not hot, air. I knew what was up when the temperature gauge started to climb. The gravel truck tuned into a road construction site, and I just followed him in. It wasn't long before I got the attention of the foreman to explain my predicament. He called a welder over to repair the hole in the radiator, filled it with River water, & then I was back on the road to Rifle.
Somehow my luck used to be better.