Yes, it is Warren! THE largest dealership that I know of. Just added sixty (60?) stations so lots of cars go thru the place.
It located in Newport Beach which is a very well-to-do place to live. Thus lots of MB's around.
But their prices are about $20K more than one should pay for a used MB ('95 C140 for $58K). But that 'pays' for the Starmark warranty. Good for some people but not in my book!
Well, hope to see you in your new Lexus!