That is just the first fast charger in a likely roll-out of many more. Perhaps they put one closer to SF later so you can easily make the return trip. Based on things I have seen related to the Leaf, they plan to install them at many Nissan dealerships. Once that is done you should be able to jump from dealer to dealer on a long trip. Having one at the dealership makes sense so that they can top off cars used for test drives, or if an owner brings in a car for routine inspection they can also (80%) top it off quickly.