secret storage shelf

What secret shelf is this?

Miss Mercedes said:

I assume the shelf in the passenger footwell. It sounds great on paper, but one hard acceleration will launch whatever you store in there towards your passenger.

It's great for secretly storing stuff while parked though.

I prefer storing things in the hidden compartment behind the left brake light. rivate:

Click to expand...

Okay! I see about a 6" X 10" flat area up there. Yeah, I guess it could be useful when the car is parked.

But I have no hidden compartment behind the left brake light. There's a large'ish access panel but behind it is a piece of foam that sits on top of a metal plate sealing off whatever cavity might be back there. :|