What's this cop doing?

I try to walk to work a few times a week. Every now and then, I see a county cop sitting right here… in his car, with the lights flashing. (On Street View, he’s basically right where that white van is).

This only happens in the morning. Traffic isn’t particularly heavy or fast along that road. There’s never any sort of debris in the road in front of him, and as near as I can tell, he just sits there for a while. I’ve never seen anyone trying to cross the road there, and that particular building never seems very busy. He completely blocks the right lane, so everyone in that lane just goes around him and then immediately gets back into it- so he’s not even really having an effect on traffic.

So what gives? My coworker says he’s probably sitting in there playing WoW on a laptop…