That made my day. It really did.
Now thinking about those motorists in Texas...
If I had been on the road on my way to work and I saw a sign that said "Caution: Zombies Ahead" I would have done 1 of 2 things:
1. Calmly continue on to the next exit, get off the highway. Turn around and head for home where I undoubtably have various weapons and instruments that I could use to thwart a zombie apocalypse...ie hide in the basement until it's over.
or
2. Speed up, head north...don't stop for anything until I'm away from anything that slightly resembles civilization.
Yep, the thought that it is some hacker playing a sick (and absolutely hil'effinlarious) joke would never cross my mind, because I've seen enough zombie movies to know that the guy who sits there and says "Well, this just isn't possible, there's no such thing as zombies, there MUST be a logical explanation for this!" Is usually the one who gets pulled through a window and has his intestines ripped out.