In big white letters in the middle of the green alien head shape!!!
OMG BWAHAHAHAHAHA!!!
I KNEW somebody already thought of it...
That's PERFECT!!!

aliens don't really drive cars cause there're no roads in space, cars are for stupid humans, you should get a stupid human on board sticker unless you drive a spaceship then you might be an alien but if you don't drive a spaceship then you're probably just another stupid human, it seems to me you lived your life like a candle in the wind