Grocery restraints

I'm still figuring out my "new" car. The other day I was pulling out of Trader Joe's (I'm there like twice a day) and my seatbelt alarm kept beeping. I couldn't figure it out since my seatbelt was on and secure. Then it occurred to be that maybe the groceries next to me needed their seatbelt too. So I seatbelted them in and the beeping stopped.