fast moving luminous green fireballA bright luminous green fireball almost the size of a VW hovered about 100 feet above and about 300ft in front (west) of me. Between the object and my car was a semi-truck and a bridge spanning the Fraser River. I barely had time to pull over and say, "what the..." when the object dropped toward me and the semi-truck, hovered and sped off upstream (north) at an extreme speed. The way it moved was not straight but erratic. I beleive the truck driver also witnessed the event as he too, hit his brakes hard.