Actually no, it didn't know she had been to the grocery store specifically, just that she had put somethingin the back seat or back of car---, my chevy got a computer software update and now does that any time you put something in the back seat-- the dealer told me it was a liability thing so you don't leave a kid or dog in the back, but it alerts you any time you put something in the seat no matter how large/small it is--- dealer said it's tied to the seat/airbag sensors-- probably have trunk sensors too (for liability since people will sue over anything these days)