roflwaffle -
There's an old statistic I got from my Urban Planning class back in the 1980's. In most urban situations like Los Angeles, 50% of the automobile air pollution comes from 10% of the vehicles, aka the "gross polluters". Sounds like the legislation is hoping to get to these automobiles (1976 or older). I see (or smell) one every day on the freeway. There's a "gross polluter hotline" that you can call to report them (
1-800-Cut-Smog). I've written down license plates every now and then, but never made the call.
If my Dad still has his 1972 Chevy Impala, this might have been a good way to unload it.
CarloSW2