Sean Click may have come up with the everlasting ad, as "it is illegal to pick, destroy, or dig up a California poppy" in California where this McDonald's logo appears on the side of a road. (California Penal Code § 384a actually this law applies to any plant, not just poppies.)
Yes, Sean's idea is a classic seed bombing* but with a twist, and the Next web calls it possibly official, but whether McDonald's bought this ad or not is still unclear. Either way, all you really have to do to get rid of this logo built out of the invasive species known as the California poppy, is to throw down more seeds of any kind, possibly remixing the perfectly executed logo into something like this.
* note, read the comments. This is a simple photoshop job, ie; spec work and not an actual seed bombing which would have been AWESOME