Precisely. They don't want smelly, smoky, noisy diesels giving CA residents health problems. So they make it hard for you to buy them. The 7,500 mile law is pretty much only so people moving into CA can keep their exisiting diesel cars. If you try to register a vehicle with non-compliant emissions with less than 7,500 miles, they'll kindly give you a temporary one-way permit to get the car out of CA within 30 days. No joke... I sure don't miss living there, other than being near all the racetracks...