More failures.
We were riding the tandem when the drive train start making a funny clicking sound.
The chain popped out of the quick-cage on a Vx and got lodged under the rear tire, wearing a flat spot on the links.
On my commute home, spoke nipple with head torn off. The spoke protruded 2mm from the body and the threads had stripped in the head.
There is a theme here. Lots of failures commuting, but then, that accounts for many of my miles.