[Shooter 2.5]

Statboy said the same thing. It's very possible. Victims can be lined up at the pumps and all the killer has to do is wait for a white van to leave the area.

[Vol2727]

I agree that this is most likely set up by the sniper to wait on a white van to drive by before shooting. And we know he watches the news and is hearing that they are closing down the major thoroughfares after a shooting has happened. So, he purposely picks a spot near a major thoroughfare, makes his move, then calmly makes his getaway in another vehicle in the OPPOSITE direction from the exits. This sniper is smart.