I just received my registration renewal notice; it states SMOG CERTIFICATION REQUIRED!!! I called dmv, (only a 15 minute wait), and they discovered that my vehicle had been registered by Carson Toyota as a gas vehicle, ergo the smog cert requirement; to cure, i had to make an appt. to go in to the DMV office here in San Diego on the 30th and have a vehicle confirmation done by the inspector, and then they will issue a new title. So for all of you here in the land of the warm and the sunny, no smog is required, still/and as yet. As for me, small price to pay (going to the DMV) in return for such a great vehicle.
How's that working out for you now? (Note: This is now 2015, and California suddenly requires SMOG checks on Prius after more than a decade of exemption).