This is a picture I took of the back part of a bus this morning.
Look at the flag, which is backwards. The stars don't go on the upper left corner, and not on the upper right? What a mistake, right?
Well, no. This is a detail many people don't know. When the flag is displayed on the sides of a person or a moving vehicle, it has to be displayed as if this person or vehicle had it on a staff and was moving forward, and then, from the right-hand side, you would see it like this. I mean, imagine that the flag was on a staff on top of the bus. When the bus moves forward, the flag waves backwards, and from the right-hand side, you would see it this way, with the stars on the upper right. So the flag has to be displayed this way on the right-hand side of the bus.
Here you have a few more examples.
[Again, sorry to all Americans who already know this, but I thought it would be interesting to Spaniards, since our flag looks the same from both sides.]