Originally Posted by kwoj
Where have you seen the advertisements ?
At the Sixt desk at NCE airport is a sign for Sixt Diamond/Platinum (this is how I first heard of this level) and while at MUC car rental centre a few months ago I heard one agent saying to another "...we have a Diamond booked this morning so make sure we have one S [class Mercedes] available"
Incidentally, I find it interesting that my Platinum card is valid until 01/12!