The Commission may issue bonds and other evidences of debt as may be authorized by this section or other law. The provisions of Article 5 (§ 33.2-1920 et seq.) of Chapter 19 shall apply, mutatis mutandis, to the issuance of such bonds or other debt. The Commission may issue bonds or other debt in such amounts as it deems appropriate. The bonds may be supported by any funds available, except that funds from tolls collected pursuant to § 33.2-2607 shall be used only as provided in that section.