However, the reality is that GM does not want to build anymore electric cars and does not want the public to understand how good these cars really are. Instead, it wants the California Air Resources Board to roll back the requirement for vehicle manufacturers to put zero emission vehicles on the road. The California Air Resources Board has studied the impact of vehicles on water quality and air quality in California. Quite simply, vehicles are slowly killing us by poisoning our air and water. CARB has also studied the options available to stop this process.
Vehicles have less emissions than they used to.
On the other hand, there are a lot more vehicles. Another problem is that emission control systems do not continue to work as designed over the life of the car. The reason is that electric vehicles do not have any emissions, but also that electric vehicles do not require the transportation of petroleum products that leak into the environment every step of the way from the well to the exhaust pipe. Of course, some power plants produce emissions. However, California's electric supply includes such things as wind power and in general produces considerably less emissions to power vehicles than the same vehicles would produce with internal combustion engines.