Every state I visit has lots of trucks.  Michigan is no exception.  What is exceptional is the number of wheels under all of the trucks not governed by interstate commerce regulations.    Rarely do you see a truck that has room under it for any more wheels.  Some of the trucks have wheels under the middle of the truck that turn from side to side with the front wheels.  Others have wheels that can be raised when traveling empty or when turning.  Michigan must be a truck tire dealers paradise.
              --Patrick