66 is the path of a people in flight, refugees from dust and shrinking land, from the thunder of tractors and invasion, from the twisting winds that howl up out of Texas, from floods that bring no richness to the land and steal what little richness is there.
– John Steinbeck
The Grapes of Wrath, Chapter 12. The famous highway Route 66 is the main thoroughfare from Oklahoma to California. It becomes the path of hope for desperate refugees fleeing from the Dust Bowl states and the invading tractors.