[jcp123]

It could be California. I know most automakers have done away with California-specific cars and just put CARB-approved stuff on for all USDM cars, at least for the most part. My understanding is that from an operations point of view it ultimately streamlines the production thereby lowering costs. I am not really up on what other markets have in terms of emissions standards, though. Anyhow, that's all pure, unadulterated speculation as to the purpose of two cats.