Oh I see... I want it to be so badly, sometimes
I leave my sceptic head in the drawer!
I have never driven a normal tractor or even
the one you described!
Living where i do,i see this effect with the Sun fairly regularly and to my mind,the video in the OP is exactly what it would look like,if filmed on a
poor quality camera phone!
Sorry,i am a believer in UFO'S,but this is not one!