Before self-driving cars begin appearing on our roadways, we need to ensure that they can cope with the potential hazards of driving alongside other vehicles.
As with many cultural artifacts, the Japanese have taken the truck and expressed it, enlarged it, raised it to what we might consider an architectural form.
As cities try to control their air pollution with driving bans, research finds citizens react by buying more cars, watching more television, and, sometimes, by driving less and contributing to lower pollution in their towns.