Any county board may also use so much of any motor fuel tax money allotted to it as may be necessary for the purpose of paying bonds (and interest thereon) heretofore or hereafter issued for the purpose of constructing superhighways pursuant to Division 5-33 of the Counties Code. No moneys shall be paid from the Motor Fuel Tax Fund to any county which has issued bonds pursuant to the Counties Code or its predecessor for any purpose other than to pay the principal of and interest on such bonds unless all moneys previously received from the Motor Fuel Tax Fund have been applied as required by § 5-33002 of the Counties Code.