I live in Los Angeles and as far as I knew, there were NO dealerships in the greater Los Angeles area, San Diego, mid state or up north. The closest one just opened recently in Palm Springs and before that, the closest were 2 dealerships in the Las Vegas, Nevada area.
Through my connections, I was able to find out the reason for this was because of a disagreement between the current Hyundai dealerships and Genesis of North America. Originally the dealerships were told they could sell both brands on the same lot, but then Genesis said no, you have to have a totally separate dealership, which of course meant more infrastructure cost, which the dealers balked at.
He said, "Yea, I was worried about that too, but they just opened a dealership in Glendale, so no more worries!" I'll be heading over there this weekend to check them out!