There sure in no loophole in CA. Every two years from new to scrap yard, Smog test. No pass, no registration. FYI, gas powered vehicles no smog test for the first 5 years. The only diesel trucks I see "running coal" are from mexico, or military service members with out of state plates. Between the cost of new diesel trucks, the warranty issues on a now, 80 grand truck! 60 thousand seems to be entry level now, and the smog laws, who dares do a Smog delete!