I noticed that Google has updated the Street View imagery available in Google Maps for Lincoln. It must be a fairly recent update, because I only noticed it in the past couple of weeks. Although the update is fresh, the images themselves appear to date from last Spring. The foliage in my yard suggests that my area of town was driven in April, 2012.
The imagery is not only more recent, but it is also at a greater resolution. Here's a screen capture looking east from 14th and R. Note the shadow of the vehicle and camera in the foreground.
And here's a view looking south down 14th Street from R, that emphasizes the high resolution of the images compared to the earlier version, and also proves that a bicycle has actually used that 14th Street bike lane on at least one occasion.
If you look at the shadows thrown by the buildings, trees, and vehicles in these two images, you'll notice that even though they are both taken from approximately 14th and R Street, the view to the east was shot in the late afternoon, and the view to the south was shot early in the morning--though not on the same day.