I am NOT sure but I'm willing to bet that the majority of those deaths are due to driving drunk or under the influence as well as killing stupid people. There are SOME accidents that are completely at random but the safety features of cars pretty much prevent those. Some... However, if reality bears out my expectations, I bet you'll find that those people who died in car accidents are, for the most part, not random but rather people doing stupid things in their cars.
Are there exceptions? Absolutely. It's going to happen. You take the good with the bad I suppose.