Apparently the adage, "Something old, something new, something borrowed, something blue," can apply to TV ads as well as weddings.
Something old: early 1970's Blue Bird skoolie body
Something new: IH chassis that is much newer than bus body
Something borrowed: Summer camp imagery?
Something blue: Paint scheme on bus body
My gf gives me a hard time about finding errors on TV (in this case, the age mismatch between bus body and chassis). But the bus graphix are pretty cool nonetheless.