Tom C. Clark,
Massey Motors, Inc. v. United States…
“ In the light of this, it appears that the struggle over the term 'useful life' takes on less practical significance, for, if salvage is the resale value and a deduction of this amount from cost is required, the dollar-wise importance to the taxpayer of the breadth in years of 'useful life' is diminished. It is only when he can successfully claim that salvage means junk and has no value that an interpretation of 'useful life' as the functional, economic, physical life of the automobile brings money to his pocket. ”
