Circle of light alongside a road and disappearing out of sight

I can’t remember the exact month this happened but it was last year, 2021. I was on my way to work and it was dark, so the pole lights were on along the side of the road. I was driving along and happened to glance up into the sky and saw a bright circle of light stationary but right above the road and my first thought was , “that’s a pole light, and I must be tired, now I’m seeing things”. But there wasn’t a pole, and as I started to pass under it, it moved to the right not super fast, but fast enough that I saw it move at the top edge of my windshield and disappear over the tree line on my right. I looked in the mirrors and behind me and there was no sign of it. I’m not sure if it was a drone or what but I never did see it again in that spot. To this day , when I come through that same area I’m always looking up to that area and I never see anything.