Where's the aerial?

[Phil303]

I'll try and make this the last 'new S8 owner asking a bleeding-obvious question'...

I've seen pictures of various S8's with an aerial mounted on the nearside rear wing. The one I've recently purchased doesn't appear to have an external aerial, only the sat-nav box on the boot lid.

Does this mean anything in particular? It's a mid 2002 model, not a Final Edition.