i wanted the riders to be able to see the world around them while waiting for their bus while being comfortable and protected from the weather. we drove it with the truck and not the trailer. here are some pictures that were in a recent news letter. i learned a lot from that first group and my new group will benefit from my experience. the effect changes somewhat depending on the arrangement of lighting. whether you just like collecting them or need to keep track of air pressure changes, chances are there is a barometer that is perfect for you. 