OMG that has to be one of the WORST ideas ever!!!!!
One Example they've got is "Thanks Daddy" - I'm sorry but some pikey little Chav would Key that the second they saw it - Porsches get enough "unwanted" attention as it is - why would you want to add to it????
That's like having the sticker saying "don't get too close to what you can't afford" or something - talk about asking for trouble!!!