Projected Ads

A while back I was walking around to Union Square (New York City) and saw an ad against a wall. It was clearly being projected, so I looked around for a source. I found it in the van you see picture below at an angle that allows you to see the ad as well. Their was no sign indicated who they were their on behalf of, but it seems unlikely that they were working for the company that owned the building the ad was projected on.