Hmmm. I didn’t remember the hand off part. I do remember every radio dial had 640 and 1240 marked with a CD triangle and circle.
Never had to worry about such BS, I’ve never had a radio in a vehicle.
I collect old radios, and sets from the late 50’s/early 60’s do have these markings.
Apparently the Japanese did not get the word that the program had ended. Some imported transistor sets continued to bear these markings up to around 1970.