Didn't go last year but my buddy that I went with this year did and he said traffic was horrendous that year. This year we left during Superstock, walked right out to our bikes parked in the 'Grassy Knoll', rode out to 68 with no slow down, went out to 101 and traffic was moving great until 156, 5 miles of slowdown there and then straight home to SJ... no problem at all. Riding a bike and or camping is the way to go if you can, if you are going to drive then be prepared to wait for the crowds to die down.
I think this is a great track for MotoGP, personally I think the overly computer aided track designs are less than interesting, an old track with character that follows the flow of the land is a dying breed and that (for me) is too bad. I know the rider's have said this track is hard and I understand the need to keep them safe, but whoever said a track should be easy??
As far as event coordination they made a lot of changes based on fan feedback and I think that shows a commitment to get things right. They dropped attendance from 53k to 48k, changed the traffic flow, allowed track crossing (though this was a failure in my mind as it needed to happen after the MotoGP race not at the end of the day), built a larger souvenir stand, and created more space for concessions. I am sure after the feedback this year they will make more adjustments... as for the weather, nobody knew it was going to be that hot, there were record temperatures in many areas, and the fact that they were trucking in and giving away free water was plus in my mind.
My biggest complaints are the track crossing at times when it wasnt really needed and none when it was, changing of the event schedule which left us sitting around with nothing to watch for hours, and camping on Archery Hill which me and my friends have renamed 'Tick Hill'. We camped for 3 days and found more than 20 ticks on our person or in our tents... not sure what they could have done about it before hand but hanging out in camp was not an option for us.
Cannery Row was a nice place to ride down to and check out all the bikes and 'interesting people'. I learned something I was not aware of, apparently Japanese Sportbikes need to be wound up regularly in order to get them work, in some cases all the way to rev limiter...
In all I would go again and camp in the preferred spots, get a hotel in Salinas, or find a campground somewhere outside of the event and just ride in in the morning.
Cheers,
Geddo