The auto industry has all so caused the ozone to go back where it was at its worst. It will guarantee our demise. Another problem with the engineering, by building SUVs, 4x4 trucks hummers, etc. They have guaranteed road kill of humans or disabling effects. If one is in an accident with other normal size vehicles since they upsized two to three times in mass and weight, these vehicles are beast of destruction. Created out of the darkness of stupidity and greed. Insurance rates will rise the planet will get hotter and mortuaries will be the best investments for that. This problem is as serious as the heat up of the planet. This whole "smog your car to bring down pollution problems in California" is b.s. The auto industry along with the oil industry will kill all human life along with many other forms of life if this continuous, period.

Baba Ito.