This Nissan billboard advert is one the most creative ones we've seen in a while. It has a smartly placed error (done for it's own benefit, really) and spotting it in the first go has become a task for many.
Found it yet? Nope? Here's a clue. It's a typo.
If you've given up, then the next line has the solution...
The word 'Of' repeats in both the first and second line of the phrase
(The car worthy OF OF your attention)
You may now breathe that sigh of relief.