The Cali ZEV program is not the Federal CAFE program. And ZEV is not about CO2 alone. ZEV is not about fuel economy. ZEV is a policy that targets a variety of Smog producing agents that are caused partly by auto emissions, NOX would be one. Smog is a real issue here in California, as it is in some other areas of the world. Public policy that puts vehicles on the road that don't add to the local smog problem is good for health, of children especially, and good for the regional economy as it prevents smog warning days that keep people indoors or at home. Since the credit trading program is designed as a market incentive it is not surprising that it is helping some people get ugly rich. I don't like that part of it either. But it is helping to field some innovative cars, all of which lack tailpipes. And a side benefit might also be getting more Americans out of the narrowest mindset of gasoline as the only go-juice.
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See my car's mod & maintenance thread and my electric bicycle's thread for ongoing projects. I will rebuild Black and Green over decades as parts die, until it becomes a different car of roughly the same shape and color. My minimum fuel economy goal is 55 mpg while averaging posted speed limits. I generally top 60 mpg. See also my Honda manual transmission specs thread.
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