Sugar beets collecting

When the sugar beets are harvested they are nowadays first pilled up (in my youth the harvester loaded them into a truck/trailer immediately), before they at a later date start there finally trip, to the factory.
I had never seen this before, but today I caught them in the act. They collect the beets during the night! A bit secretly, almost stealthily. But all legal, no problem.
The shutter speed is 6 seconds, a long time to hold the smartphone steady in one hand.