Aren't the tractors pointless though? Produce comes from a supermarket not a farm!If you don't like it stop buying farm produce.
Sadly I think there is people out there that genuinely believe that. If I see a tractor in front of me it's a bit of an annoyance, but they usually pull over and let people past and when you look at the extra time it takes following one it is such an insignificant amount of time, I'd say there are often dangerous overtakes of tractors but most of the time it's motorist v motorist with the dangerous/stupid overtake.