If this is California, it may just be an art installation display.
Was there any credit given to the artist?
Indeed Emily --- when I read this story the first thing I thought of was the fake JATO car embedded in the cliff story.
I missed that story, Pogo, or "fake story" as it may be.
I guess if we wanted to add "Ford" to Mt. Rushmore, we could use this shortcut method. Just take a Ford truck and ram it in the side of the cliff!