Who has been pulled over for double towing illegally???

In a lot of the agriculturally predominate states the farm lobby has been successful in getting exemptions for many of the traffic laws specifically for the farmers. Off the top of my head I can immediately think of one in Iowa. Over width rules. Farmers can be way over width on the highways and not require a permit whereas every one else has to get an over width permit and abide by the rules of the permit.