"Roll your windows down sir" from the cop car PA system solves this problem, doesn't it? I can't recall seeing anyone leave their windows up when pulled over. And since they don't seem to require the back windows to be rolled down, then why is the law only restricitve for the front to side windows? Almost sounds backwards, or at best poorly thought out and unnecesarry.. Me thinks this is was a classic legislative case of a solutoin looking for a non-existant problem and relying on the "won't anyone think of the heroic police officers" meme to negate criticism and opposition. Comply citizen! is problably the strongest argument the law and order crowd has for this.