They say everything is big in Texas, but when compared to Dubai, the Longhorn state is a midget. Courtesy of the emirate, we have seen the world's biggest theme park, shopping malls and even indoor artificial ski fields.Now comes the Middle East's largest billboard ad. Weighing in at a whopping 400 meters long and standing 20 meters high at its highest point, the billboard is promoting one of the cities development projects named 'The Lagoons'.Using the more than 2,880 hours of man power, the billboard is positioned in a marketing traffic gold mine on the infamous Sheikh Zayed Road.