Using the decal as a clue is funny because what if there was a street scene where that happened to be misleading? For example, I had seen that a Sacramento County Sheriff car got to Europe and I guess it now belonged to a member of the public who is driving it with the original decals still attached. I wonder how the LLM would reason if it sees the car as “out of place”.
Probabilities. That could happen with anything. Someone could build a classic japanese house with a japanese garden in Hawaii. But Japan is probably a better guess if you see a japanese house with japanese fauna.
It happens occasionally - the most common example I can think of it getting a license plate or other location from a tractor-trailer (semi) on the highway. Those are very unreliable.
You also sometimes get flags in the wrong countries, immigrants showing their native pride or even embassies.