http://money.cnn.com/2015/09/2…scandal/index.html?iid=EL
I realize that it only applies to Diesels now but you can bet that it will spread to gas motors as soon as they find another manufacturer "cheating" on diesel.
When California first started the low emissions programs in ~1974 everything suddenly had to run bad and/or use twice as much fuel in order to meet their standards. Imagine blocking off the vacuum advance on older cars or adding controls that added full time egr and no vacuum advance. So a single fuel/ignition advance map that will pass emissions at all times under any conditions could be the end result. Imagine trying to overtake uphill.
That time is coming again to a country near you.
I am happy that my newest vehicle is a 2000 and I now live in a semi remote place where emissions are not tested at all.