It's easy to make someone else's car a target......and some high school minds will definitely see that car as a target. Hope your Dad has a sense of humor.
So you don't have enough confidence in your sound and your school reputation to rely on the music and the band to attract attention without the bling bling car and the Vicki's Secret bodies? Besides, why would you want everybody hanging out with the car while you're playing music? Wouldn't you want the bikini girls on stage so people will actually hear the band?