Hi all, I'm totally new to this board, I signed up specifically to ask one question and I think one of you people might be able to explain it to me. On the bus the other day my friend and I noticed a fly flying around the bus, the bus was stopped. when the bus started driving again the fly maintaned it's position. How come the fly didn't end up at the back of the bus even though it was hovering in mid air and wasn't resting on a surface??? Anyone have any clue what I'm talking about?? mal.