There are so many thinks it could be, need more info. People drive with there eyes about 20 feet in front of them so running over a bucket and the wire handle would make marks on the drive shaft if the bucket and handle got stuck above the drive shaft, and then flung out. I vote for the Alien mini ship that was sitting in the middle of the road .
I was going to the airport one Sunday and in the middle of a 6 lane freeway was a truck with it's hood up and flashers going, I was about 1/2 mile back, there was a car about 1/4 mile back heading straight for the truck, I told my wife, watch this idiot, and BLAM right into the back of the truck, We were the only 3 vehicles on the road. The car and truck went into peaces and caught fire, I yelled out the window as we went by, IDIOT. I had to catch a flight.