UhOh, that's ugly. First Rushmore I've heard of with a cam bearing failure, use'ta be more common with the older twin cam. Don't like hearing that stuff
There was no "event". Pulled into a service station and noticed a louder than usual clanging noise from the motor. It still ran fine but got noisier as I continued on. My buddies and I figured I lost a lifter. Pulled into a dealership and left it there for further investigation. Last 50 miles were on the freeway. I was still 100 miles from home. I imagine if I had kept riding there would have been an "event".