The Panning Technique in the Night

I was out shooting in the evening and it got a little darker than I was ready for.  I prefer not to use flash when doing street photography so to get enough light, I was shooting with a slow shutter speed.  The long exposure leads to blurred action but when combined with panning in synch with the subject it can provide a nice focal point with a streaky background.   I like the impressionistic sense of the subject this creates. 

Here's the first shot.

Here's another.

Then there is this series of a bicyclist quickly going uptown moving faster than the taxis around him.  The third one is my favorite.  

And then this was the final one which is the best one.