what is this hole for??

hi does anyone know what this hole (left bottom) is for? thanks

[image]http://www.virtualhelvetia.ch/exige/hole.jpg[/image]

On the S1 elise it contains a plastic thingy to remove a fake bolt head off the locking wheel nut.

don’t have locking wheel nuts, so it’s just a Elise S1 part I guess