blow out

Today while traveling 75-80 mph up to los angeles I ran over a trailer hitch. I thought my little suv was going to flip. I ended up stepping on the brakes after my tire blew out. I was getting off the shoulder when smaaash the cars rear ended each other. Everyone was ok, but two of the cars where totaled. Chp showed up and said it wasn't my fault. Wow that was a first, it wasn't my fault? so I began to laugh. I laugh when I think I am going to cry.