This neon sign once advertised a car dealership. Dodge was one (small) step above Plymouth on Chrysler Corporation's pecking order. The other brands--DeSoto and Chrysler--had a similar problem of overlap.
Both Plymouth and DeSoto are gone now. The very last DeSotos were wearing fins.
An artistic effect has been added to this image.
This sign is among the collection at Tulsa's Stokely Event Center, which is not on Rt 66. More info:
www.stokelyeventcenter.com