Fog.

Ended up doing the last hour in the dark after a slow drive up CA route 1 yesterday. Spectacular scenery during the brief interludes between clouds and fog, though. Accidentally went through San Francisco again when I took the wrong turn onto the Oakland Bay Bridge. Once I got back out across the Golden Gate, headed to Muir Woods for an hour or two, and then off up the coast. Ate dinner in a decent but very overpriced place designed to look sort of Russian. Amazingly managed to find a $48 hotel room. That's where I am now, but heading out soon. Hopefully will at least make Oregon today. And hopefully the fog will go away so that I can actually see the scenery!