Yup ..gotta say that does look pretty realistic..My thoughts though for these R/C models I like to do it the natural way..like Joe Murray does it (little giants) oil and dirt mixed looks pretty real to me ..I know we wont ever acheive that rust look because most are built from aluminum but we can still get them pretty dirty .Have a look at the rear mudflaps on robs FWD ..this truck has probably hauled 300 - 400 + loads ..Rob works the snott out of this truck..well built good truck Rob