Nadia PflaumTroost sticker If you've driven down Troost Avenue, oh, ever, you might have found yourself behind a vehicle sporting one of these blunt, black-and-white bumper stickers. They're the creation of Mark Holmes, the 41-year-old owner of Coffee Break, the quirky cafe that serves Rockhurst University and University of Missouri Kansas City students on the corner of 54th and Troost.Holmes sells the stickers for $1 apiece. His first 300 went pretty fast. After donating the $300 in proceeds t
