Here are the relevant CA DMV sites plus another that also includes info about the registering a foreign vehicle in CA. I would challenge Steve at LCD and anyone else who says titling it in another state = no problems. Cite me CA DMV chapter and verse cause I don't see it anywhere. Like everything else, you can get away with it but from my reading, it's not legal outside of the very, very limited exceptions stated in one of the sites below. Been successful at doing it does not equal legal to do it.
Registering an NON-USA, out-of-country, or "Grey Market" car in California
Buying a Vehicle From Out of State - Can You Register it in California? (FFVR 29)
https://www.dmv.ca.gov/portal/dmv/detail/vr/checklists/outofstate
Vehicle Importation: Understanding the 25 Year Old Rule
Like some of you, California is messed up and if it weren't for the beaches and nice weather, I'd be gone.
The relevant code provision is CA HSC 44200 through 44210. California Code, Health and Safety Code - HSC § 44200 | FindLaw Part of the issue is that ARB and DMV don't communicate well, so a lot of misleading info gets put out there and people get screwed over as a result.