Originally Posted by Pntyrmvr
Last time I took one of my own plates and through it on the back. At least I tried... officer.
Plate from the wrong car = deep $#!+
Inside California you'll be fine, outside you may raise a few eyebrows. For all the laws and liberal over regulation and over taxation enforcement tends to be lax if you aren't poor.
Are you buying from an individual or a dealer? Is it currently registered?
What are the local regulations for registering your car?
I recently moved to Washington and they want everything notorized, CA can practicality write up a bill of sale on used toilet paper and apply for a $17 lost title.
If it is registered or a dealer you are good to go, you have 10 days to get home and register it per CA law, with plates no one will notice and copies of all paperwork, the traffic cops understand people buy cars out of state and you aren't expected to have it registered instantly.
In transition I bought a sprinter in Chicago with an Ohio title with a Washington purchase address and a CA drivers license then proceed to drive it for 9 weeks on a 30 day permit.