Emerald bright green colored sphere; no sound.I was driving back home after my night shift. I was in the country side. No street lights. I was driving 80kmph. On my left only farm. Not more than 100 meters away (on my left) I saw a bright green sphere of the size of golf ball. I put my head out the window. I couldn’t believe my eyes. The sphere made no sound going faster than my car. I would say 100kmph. Once the shpere over took me it just vanished.