I spotted this the other day driving on the freeway... I was kind of amused at how he had so many messages going on to say the same thing (i think). It made it so none of them could be read, and thus, none of the messages ended up being communicated. Lucky for him, gridlock is common out here. I mean this all tongue-in-cheek, of course, but it is a good testament for the value of good copywriters and designers.