Is This Some Kind of Sign?

Yesterday, I was driving my family from my parents house in Prattville, AL to Teri's parents house in Flintville, TN. We had been on the road for about an hour and a half. James was in the backseat snoozing, Teri was in the passenger seat reading aloud Harry Potter and the Deathly Hallows (we are big fans) and I was listening intently to Teri's voice as she voiced each character and narration. We were on mile 305 of Interstate 65 North in Alabama when I looked up to billboard on the side of the road that read, "WHO IS CHRIS? WHY IS HE HERE?" I was suddenly drawn out of the world of Harry Potter and into my own.
Why was that sign there? Could anyone else read it? Were my eyes deceiving me? I quickly nudged Teri and pointed to the sign. She looked up as it passed, read it out loud, said, "huh, look at that" and went back to the book.
As she continued on with the story, I couldn't help but feel reflective. I still don't understand why that sign was there. Was it for a business? Was it someone's clever way of poking fun at a local politician? Was it a cryptic message for the locals of that stretch of freeway? Why was it there? It did not have a company or website written on it so I couldn't probe something or someone for more info. It was just a sign, yelling at me to take inventory. Here I am 24 hours later, and I can't shake it. I have more questions than answers. Was that for me? Was it a freak thing? Am I thinking too much? Maybe... probably... no! I will not be so bold to think that it is some divine intervention or message from the future, but it does make me think.
If I look at my life as a great narrative or movie, which I have often done through out my life (often providing my own soundtrack by humming mood music), I can't take this as a coincidence. I must look at all the clues and all the randomness as something greater, something meaningful.
I will be on that road again in two weeks. You better believe that I will have my camera at the ready, and snap a photo to post on here. But for some reason I drive past mile marker 305 and the sign is gone, I will know and remember that it was there, it was real and it was for me.