Alliance of Automobile Manufacturers sues California Air Resources Board

What else are trade associations are meant for? The Alliance of Automobile Manufacturers has sued CARB over the AB 1493 legislation. This was expected ever since the rule was adopted by CARB in September. The legal reason most likely given in the suit will be preemption of federal authority by CARB in regulating CO2 emissions from motor vehicles, which is a de facto fuel economy ruling. (Not quite, but close enough). CARB is no freshman to this game. They have been planning their response for about two years, and now it is time to go to the mattresses.