I know it is because I have the original image. I had planned to do this very same edit when 'islamispeace.org' started the bus advertisements, but I never found the time. Whoever did this one probably did a much better job than I could have, anyway.
Would seem that this image would have come out much sooner if this were real.
I don't know.. just strikes me a bit off.
But, I do love the irony of it all.