In bradbury's version of the future, how have roadside billboards changed? what does this detail show the reader about this society?

The billboards are significantly longer; they are now 200 feet long. The purpose of this detail is to show how fast society moves. In order for people to actually read or notice the billboard it needs to stretch out and be ostentatious. People are so self-absorbed they don't pay attention.

Some people also think that this detail can show how out of touch society is with the natural world. Billboards 200 feet long block any scenery and impose upon the land.