Rear Wheel Overhaul
You can't beat that durability. But it did cause me to look into the bike with a bit more depth. And upon that inspection, I realized the rear wheel would barely spin. One might not notice on the bike. But when I had it in the stand and gave it a spin with my hand, it wouldn't even go a full rotation before it came to a quick stop.
Time to overhaul them bearings.
I had never done anything to a rear wheel (aside from a little cone adjustment). But the internets offered clear instructions. So after about 10 minutes of video tutorials, a trip to the bike shop for some grease & bearings and 20 minutes of sitting at my kitchen table with the wheel... the job was done. It was super simple. And apart from the Phil's bearing grease, I had everything I needed already.
Get out there.