Not all of California, only three Los Angeles area towns (Santa Monica, Torrence and Irvine) will have dealers supporting the initial rollout of the FCX. This is primarily due to the non-availability of hydrogen fueling stations.
Picture in your mind:
100 cars a minute pass a certain part of the road every 1 minute. The temperature is just below freezing. Each car is belching out steam and droplets of water. Black ice everywhere.
Black ice = evil.