When Audi and BMW plays Chess !

BMW and Audi are two of the leading German car manufacturers in the world. They are known for their rivalry in technology and ads, however, their rivalry has escalated to a new level.
It all started with a billboard in Los Angeles, CA.

In a few days, Audi replaced the billboard with a new billboard which challenged BMW.

As expected, BMW did respond by buying a billboard just across the street.

Finally, Audi replied back and put up this billboard.

Later BMW moved its billboard to some other place and the billboard ad war came to an end.