Hi all, I'm a Southern California resident, but I was born in Tucson. My retired parents (Northern California residents for the past 30 years), have just sold a vacation property and are looking at buying a home in Tucson again, where they'll probably end up living for at least half the year. Maybe more as time goes on. Both my father and I have a few cars that are particularly difficult to smog in California and we're wondering about logistics of keeping them at the AZ home. I've visited the AZdot.gov website but didn't find answers to a few questions. 1) What is the primary difference (besides slightly different qualifications) between the Classic Car and Historic Vehicle plates? The fees appear to be even. 2) The website says that vehicles may be subject to inspection. What does this involve? For example, I have one 1977 model year Italian car with aftermarket carburetors and deleted smog controls (including catalytic converter). Will this get turned away? 3) AZ requires smog testing for vehicles model year 1967 and newer, which is an even more stringent policy than California (post '75). Are vehicles with Classic Car or Historic Vehicle plates exempt from smog testing? And before anyone gives me an environmental pitch, the cars in question would be driven maybe -- maybe -- 500 miles/year. Mostly, they just sit and look pretty I understand that like California, some very rural areas of Arizona don't require emissions testing at all. I doubt that's the case for Tucson. Thanks for any tips!