Rage Rover: Where Word of Mouth meets the road

Word of mouth meets protest meets car sales shuck-n-jive.

Across the pond, one guy's not shy about sharing his disdain for the dealer who sold him a Range Rover lemon. And he's parking his complaints outside the showroom for potential buyers to see:

Rather than flame a blog or send tweets of fury, he's decided to take his beef analog. And like negative WOM on the web, there's not much the dealer can do to hide this real life complaint. It's parked on a public road.

Curious to see how the dealer will handle this - outside of a form letter response by their rep. There's opportunity here to be creative and responsive.

Suggestions?