That m is exactly like the m&m logo, but there is only one m. Does not seem like it would be on a structure.
There is only one m on the candy and cartoon character, but that is not a cartoon character. Maybe it is a carload of candy but why the color and background. Don’t think it is related to m&m.
It is a capital M in Mars Inc and on that candy, so I don’t think it is related to the company/candy.
Looking at other options