A man pushes a miniature train engine which a little boy , possibly his son , is riding down a track at a park of some sort .
It is impossible that the boy is waving his arms as he rides down the track .
There is a better than even chance that the boy is waving his arms as he rides down the track .
It is impossible that the boy is waving his arms as he rides down the track .
The boy is waving his arms as he rides down the track .