[rangibaby]

I can't edit my other comment, but I did think that it accomplished its mission.

> ensuring that anyone who stumbled across it would be suspicious.

Or the person who was meant to retrieve it would know what they found. "It's inside the car battery buried in ..." is a pretty easy instruction to follow.

The instruction can also be hidden in plain sight – a car battery is ordinary enough that no one is going to be suspicious if you write it down on a piece of paper. You can even hide the location in order or invoice number pretty easily.

If someone found it, they may be suspicious. If I found one my first thought would be that is just some junk someone threw out (you can't put car batteries in normal trash where I live). It is fairly easy to notice if dirt has been recently disturbed, even from afar (which his good if you're worried about getting caught).

TL;DR burying something in a car battery is actually pretty clever.