This really is the second roadside optical illusion, but as I didn't have a camera for the first one*, I'll call this one the first.
I was sitting at a Vancouver, Washington Burgerville (click link *after* looking at photos below)when I took this photo, just off of 1-205's exit 30A. By the way, I totally recommend this fast food restaurant. The servers were very friendly, and their communication skills were great. Also, this chain buys from local suppliers whenever possible. It's a bit pricier than other fast food joints, but you do pay for quality.
Take a quick look at this picture. At first glance it looks like there is a retro store outside, perhaps catering to the tourist crowd.
I first noticed that something looked wrong with the mountain. It wasn't supposed to be there, and if it represented Mt. St. Helens, it should be missing it's top. Then the store looked a bit flat. But, the sky's color matched up exactly with the side window. Something was clearly wrong, although with a nasty head cold & road weary eyes, I wasn't sure what. I took a step forward, and saw what was up. It was a mural on the side of a building. The perspective was somewhat close, but the sky color was perfect! And, the clouds were really, really well done!
I had to go grab my camera and take these shots. Thanks to the patrons & staff for being understanding :)
*A Taco Time, I think north of Seattle. While I sat, I looked out the window, and saw two people eating in their PR Cruiser. When I looked behind me, I saw the same people. Turned out that their reflection in the window, and the bench seating in this Taco Time lined up perfectly with the car parked there.