I just purchased a '13 G37xS.....question re the trunk tool kit. The trunk has a Styrofoam piece that sits above the spare tire and holds the tools (jack, etc). In the middle of this Styrofoam piece is a small, rectangular opening for 'something'. My 'something' is missing, the spot is empty. The question is, what goes in that rectangular spot?? Thanks, for the help, guys. I've learned a lot re the car, since joining the forum.

 

it appears to be for nothing at all...

 

Probably a collapsible wheel chock that isn't included in the USDM G37.

 

I think that's where I stored the lug nuts that were replaced by the wheel locks.