Santiago is the name of Chile's capital and largest city, <span>sits in a valley surrounded by the snow-capped Andes and the Chilean Coast Range. </span>
Mass media is a significant force in modern culture, particularly in America. Sociologists refer to this as a mediated culture where media reflects and creates the culture. Communities and individuals are bombarded constantly with messages from a multitude of sources including TV, billboards, and magazines, to name a few. .”
The answer to your question is, Tank trucks marked with hazardous materials.
Hope i could help :)