John,
I'm not nitpicking but I am curious on the use of modern phone numbers on your vehicles, as your layout takes place in 1956. Currently-used 7-digit phone numbers didn't come into use in the US until the mid 1960s at the earliest and didn't fully catch on in some exchanges until near the end of the decade.
P51
Not a nitpick, nor a historical inaccuracy on my part. You simply caught me red handed!
All but one of my phone numbers have the two letter + one number, dash, plus four number format which was quite common in the mid 1950s as Richard E said. So I do pay attention to having period correct phone numbers! But I do want them to mean something to me.
For example, note the phone number of the Omaha Sand and Gravel Truck (yes, that sand came from the Beach) is Ju6 1944. I am sure you get that one
The SO7-2705 on Edifice Wrecks (A Rocky and Bullwinkle pun) is my old office phone number, in the two letter exchange format.
As another example, see the Thompson Honor Dairy Truck shown below:
JA 8-2943 was the phone number in the house I grew up in, which was served by Thomson Honor Dairy. (By the way, I custom made those decals)
As I have shown before on this forum, I have a used car lot that has a model of every car I ever owned:
For the phone number MA 8-1746: the numbers are the date and year my college was founded. The MA corresponds to one of its early famous alumae.
Now for the Charter Auto Body. That is the name of the club I was in while attending college, and I graduated on May 30, 1972. I could not figure out how to denote "May 30" with only three characters, so I opted for the all number format, hoping no one would notice. So one interpretation is you, P51, are sharp enough to have noticed! Another, of course, is this crowd is above a certain age.
And thanks for the kind words