Pax, your friend had a seatbelt available.
If you provide a vest for every one of your students and your friend is your responsibility and under your instruction during your ride, then the analogy works.
I know how you feel about watching the disconnect.
P.S. I had a thought about this late last night as I was falling asleep. I had a seatbelt analogy worked out involving a car with just a seatbelt for the driver, but then I typed it in here, read it, and it didn't make any sense.
