Except as otherwise provided by statute, the series II bonds issued under authority of RCW
47.26.420, as reenacted by section 3, chapter 5, Laws of 1979, the bonds authorized by RCW
47.60.560 through
47.60.640, and any general obligation bonds of the state of Washington which may be authorized by the forty-sixth legislature or thereafter and which pledge motor vehicle and special fuel excise taxes and vehicle-related fees for the payment of principal and interest thereon shall be an equal charge against the revenues from such motor vehicle and special fuel excise taxes and vehicle-related fees.