Russia. Cars are just more dangerous in Russia. You might disagree with that; argue that it's just the roads of the former Soviet Union that will kill you (and to be fair, there's plenty evidence to suggest that's true). Watch this video, though. It's the cars that are the real killers.
Russia can be a scary place to drive. Between the tank crossings, meteors, bears, geysers, bus drivers, lightning strikes, semis and otherwise generally insane accidents, we get the sense that you'd be taking your life in your hands every time you climbed behind the wheel. With all the insanity on Russian roads, it was only a matter of time the road itself got in on the action, as you can see in this video.