Yes, I am in California, and according to their website Sonic does have restaurant drive-in locations in California. I live near the Oregon Boarder, and I have been to Sonic in Medford and Grants Pass Oregon several times. I agree that N OUt is the best, but Sonic is the second best.
You drive up to a parking spot and you order like you would at a drive through, but a server brings you your food out to your car while on roller skates. You eat in your car. You can sit down and eat at tables outside, but there is no indoor area for customers. You can also go through the drive through. The food is quite good, especially the union rings, and I would recommend it to anyone to try at least once. It kind of reminds me of a mix of a fast food place and a old drive in/dinner.
Source(s):
have ate there