I’ve nearly been bricked by a crazy and/or violent person while driving. Twice, actually. I can tell you with certainty that this will cause people to slow and potentially invite a wellness check. Bricks have so much utility.
Years ago somebody threw a brick off an overpass and shattered my Dad's windshield while he was on the highway. He drives for a living so he was able to maintain control but it could have easily killed him and others.
There was a horrific video from years back of dashcam footage where a family was driving down the highway and a brick flew through their windshield, killing the wife in the passenger seat instantly. I can't imagine going through that much trauma as a family.
Sounds like your dad was treated the same way he treats others.
Pollution is not a victimless crime. It causes famines, droughts, fires, and hurricanes. It kills people. The fact that you can't see the people you're killing shouldn't be important. You're not an animal, you're a human who has been blessed with reason enough to understand the consequences of your actions. The fact that you and your dad choose not to use this faculty is not anyone else's problem.
Imagine being in a city so pedestrian hostile that you need flags to be noticed by cars (Salt Lake City, I’m looking at you). And of course it’s never the driver’s fault.
Yeah, if you’re in SLC, just give up on walking anywhere and take the Blue line, or the Green line. Every place you need to go to is a little too far to walk anyway.
The last time I had to drop off my car at the nearest tire shop and walked the 1.5 miles on the dangerous road to get to my quiet road I had three different people stop to offer me a ride to get me out of danger. It's just two narrow lanes and a ditch and cars going 45-55 mph. You 100% can't ride a bike on it, I've seen one in 17 years.