My favorite is “You tailgate I backfire.”
My favourites are “You tailgate, I backfire” and “I’m not speeding, I’m qualifying” 
About bumper stickers in the real world I once saw one on an old, rusty Skoda that said “Recycled Ferrari” 
[size=75](this was many years ago before VW took over Skoda and turned them around).[/size]
And once I saw one on some small car that said “My other car is a Porsche”.
I just love that one! 
LightningandSally - Oh yeah,
I love that one, too. 
The Loner - Haha – “Recycled Ferrari”?
So crude, yet quite humorous.
Heheh – yeah. That license plate I saw
was really cute. 