A greener marketing campaign?

Not always recognized for being green, McDonald's is aiming to change that reputation with their latest round of billboard advertising. To get the point across that their salads are “really fresh”, McDonalds hired ad-maker Leo Burnett to deliver the message. These living wall style billboards grow lettuce over time to form the words "Fresh Salads". No word on whether or not the lettuce will be harvested from way up there, but maybe using spaces like this to grow some green may be on the uptrend.
You can watch a time elapse video of the billboards in action here:


via: Groovy Green