Looks like a joke from Google, intentionally placed there for Streetview.
Super Secret Strategic Pue Plan
By SpiderX22 @ 2012-10-18 15:09:46
jbottero
@ 2013-04-21 09:19:11
It's blurred out now. What did it say?
SpiderX22
@ 2013-04-21 15:41:10
Haha can't believe they blurred it. Was just a joke presumably. Was just a graph with nonsense axis.
jbottero
@ 2013-06-15 13:28:57
Completely gone now...