The gases that this legislation wants to reduce are the same gases produced by human respiration and are the natural products of the combustion of substances containing carbon in the presence of oxygen.
The only way to reduce these emissions is to reduce the volume of emissions being generated. This means either reducing engine RPM or the size (displacement) of the engine.
Effectively this legislation reduces the size (displacement) and available power produced by conventional engines.
As far as I can tell, this bill is every bit as meaningless as the previous mandate to force us to buy 10% electric cars. Whenever I point this out on other threads about it, I get a stony silence. I don't know if that's one of agreement or shocked disbelief that I would say such a thing.
How many electric cars do you see on the road today? I believe the most popular (okay, least unpopular) one was the GM EV-1, promoted with a massive advertising campaign. The EV-1 was sold at a loss that was close to its total purchase price, but still failed in the marketplace.
D