Mathematicians Solve the Mystery of Traffic Jams
Sadly, I would say that a reduced death rate on the highway would not be an improvement for the gene pool. It's true that about half the people killed on the road are innocent, or at least in the wrong place at the wrong time, but the other half are instigators and poor drivers that make the world a dangerous place through their inability to make good decisions. Since we can't just up and kill someone for needin' it anymore, the highway is the last place we can expect those folks to pass on without living for another 70 years, and ruining the world for the rest of us.
ps. For the humor impaired, the above is at least 70% tongue in cheek. I'd welcome a good law allowing us to vote people dead, though.