Trucks on the highway

Here is a picture of a truck that passed us by, I only managed to get the backside of it but I think it tells an interesting story.

This truck is carrying plastic bottles that have been crushed into those lovely squares and they are now being trucked to a recycling center.  Notice how they are tied down with ONE piece of string on each side.  I am constantly fascinated by how little reinforcement is used to secure items on trucks.  I often think we should not be near these trucks as that line will snap, or those large squares will come flying off at any minute.  I have seen trucks that have lost their PVC pipes or plastic boxes strewn all over the highway, it's a nightmare.

And yes, you are correct the bottom of the picture looks foggy, that's the truck, belching out some nice black smoke!