This auto center called me to inform me that the annual maintenance of my car is scheduled next week. I bought that car from them 2 years ago and every year they do the maintenance on it at a discounted price. Here is their information.

Concord Cars
785 Oak Grove Road Ste 2222,
Concord, CA 94518
Phone (925) 243-7751
http://www.concordcacars.com