Notice that when you click on the "street view" button in the upper right corner, the streets on the map which have street views are lined with blue. If it's not blue, there is no street view.
They did two separate passes down my dead-end street. The very end of the street was clearly done in the late spring, as my neighbor's yard is bare dirt and not yet planted with flowers. A few clicks further south (less than 100 feet) you get a completely different view, and my neighbor's yard is fully planted and blooming.
I can accurately say the later view was taken in mid-July. The neighbor at the end was having tree work done, and the tree trucks are blocking the end of our dead-end street. That would probably explain why the street view doesn't quite go all the way to the end. I am SO happy they did not get the view straight up my driveway. There is a shot on either side, but not one straight up. Due to the steepness of our yard, you barely see the house at all. Yay!
Here is a really, really funny non-Seattle view. Someone I know was moving on the day the Google camera car drove by. http://bit.ly/woZZ