There is a product made especially for removing adhesive strips on paint. This includes pinstriping, door moldings (double-sided adhesive type), and badges (dealer emblems, car emblems, etc.).

I have bought mine off of a Snap-On truck, and I do not recollect the brand name.. 3m??? Basically it is a 5" diameter eraser with a shaft in the center. You attach it in a drill chuck and slowly (250rpm) erase the adhesive. This is the method a body shop uses to remove adhesive films. The only draw back is you must go back and rewax the area. Not that this is much of a draw back.. since any chemical means of removal would require waxing also. This method is quick, painless, easy to perform.