Marc Whinery, I may have read a law before.
Answered Mon Sep 4
A picture of GKW610 on your instagram will be 100% legal.
“The owner of GKW610 is a jerk who cut me off” is 90% legal.
“GKW610 is evil and if I see him again, I’m going to kill him” is 0–10% legal.
But the idea of taking photos of “interesting” license plates, without editorial on them or the driver, when taken from a public viewpoint, should be 100% legal.
Editor's note: this does not constitute legal advice, it's simply a response to a Quora question