Around the world, drunk driving is a deadly problem without an easy solution. After all, the link between driving under the influence and generally screwing up your life (and the lives of others) has been conclusively proven, and yet the problem continues. What to do? Volvo’s answer: buy a Volvo and spend €850 (plus up to €90 for installation) on “Alcoguard,” a dealer-installed optional breathalyzer ignition interlock. With this system in place, drivers must blow into an interlock, proving that they are beneath the legal blood-alcohol-content limit before the vehicle will start.