Surprise Lunch plans for my Mom

I made this for my mother last valentine's day I think...This is a picture of the outside back parking lot of my mother's job. I emailed her the picture and then called her up and told her that I was there to pick her up for lunch and that I sent her an email she should look at first. Of course all that would have been impossible since I'm in California. When she looked at the picture she was delighted. Though I had to apologize too, since it was just a photoshoped picture too. But if I had the TARDIS I so would have done this. I set this up so you might have to look twice before you realize what makes the image so different. Perception filter!