Following the recent drug bust on Nelly’s tour bus, tour bus companies are going to start warning drivers about Texas checkpoints and to watch for suspect items. A Sierra Blanca, Texas checkpoint has landed Willie Nelson, Snoop Dogg, Fioana Apple, and actor Arnie Hammer in handcuffs. Texas has a zero-tolerance policy when it comes to drug possession so tour bus drivers will now insist that celebs dump their drugs before getting on the bus or at least before the Sierra Blanca checkpoint. Recall the celeb bust in the accompanying gallery. Julie A.