Naw not rare, I seen several. But it look as he loaded in a mud hole also. But i seen serveral TMC trucks dirty like that when I was driving, Yell out to them and teased them about it.
But I do not think it as dirty as a truck I drove once, But it did not stay dirty just drove through South Dakota and went 4wheeling in an 18 wheeler on a US Highway (Construction zone) I had inch thick of mud everywhere. The truck wash hated seeing me drive up.