I lost four spokes on my morning commute when the chain decided to jump off the big cog. Of course I don't have a spoke protector. (Who needs a dork disc? Bad things won't happen if you keep your bike maintained. /s) I was lucky to skid to a stop rather than crash when the rear wheel locked up....
OnStar reports location and speed data to the car manufacturer. Sometimes they will sell this data to insurance companies to raise your premium, as several news stores pointed out a few weeks ago. I couldn't really find an advantage to OnStar, (I have my phone to call emergency services) so I disabled it by pulling it's fuse....