There are several M.U.S.C.L.E. items that collectors would likely categorize as rare. However there is only one M.U.S.C.L.E. item that can be 100% authenticated as a prototype M.U.S.C.L.E. item – the Hot Wheels M.U.S.C.L.E. HiWay Hauler.
History 400 explores the history of the M.U.S.C.L.E. and the Hot Wheels HiWay Hauler.
