There must be enough overlap between units to keep things clean.  Only got a chance to watch one for a little once and opening the field he did have a few turns and it cut clean.  Once the field was open he was working a straight side and cutting at about 18 mph.  I did get to see what happens when you hit a rock at 18 mph.

 I understand next year there will be a big reverse station Fendt with a 30 foot rear mounted mower in the area.  That should be interesting to see.