I was always curious about that. Did both Hamtramck and Los Angeles plants build California cars and vice versa? Did someone in say Reno Nevada or Portland Oregon get a Ca emission car from LA, or, one shipped without C.A.P. all the way from Hamtramck? I don't have any absolute proof, but, I believe the LA plant started production of the '66 models later than Hamtramck did. I have a '66 Barracuda built in Hamtramck that was shipped to Hawaii! The only reason I can think of is that LA wasn't ready yet and they wanted all dealers to have the new models at the same time, so, with Hamtramck being ready earlier, just ship whatever they had to wherever it was needed. So, to make a long story even longer, anyone have a Hamtramck built '66 with C.A.P.? How about a non-Ca car with C.A.P.? There was a C.A.P. package available as an add-on, so, why, if ALL Ca cars came with them, and if it wasn't available to any other state? I suspect it may have been optional to other states, or, even individuals if they felt getting C.A.P. was helping reduce smog at the time. I welcome your thoughts and especially any proof one way or the other.