EXHIBIT
      10.23








**GABRIEL
      TECHNOLOGIES CORP.**





**PROMISSORY
      NOTE**





Omaha,
      NE


$250,000
            February
                14, 2006








1.  Principal
      and Interest .
      Subject
      to the terms and conditions contained herein, Gabriel Technologies Corp., (the
      “Company”), a Delaware corporation, for value received, hereby promises to pay
      to the order of Nicholas A. Fegen or holder (“Lender”) in lawful money of the
      United States at 675 Southfork Drive, Waukee, IA 50263, the principal amount
      of
      Two Hundred Fifty Thousand Dollars ($250,000), together with simple interest
      at
      a rate equal to nine percent (9.0%) per annum.





In
      exchange for this Promissory Note, Lender has loaned to the Company Two Hundred
      Fifty Thousand Dollars ($250,000), ** comprised
      of:





(a)
            Two
                Hundred Fifty Thousand Dollar ($250,000) to be wired to Gabriel in
                immediately available funds upon finalization and signature of this
                agreement.





The
      principal of this Note is due and payable on April 14, 2006 (the “Maturity
      Date”), unless this Note is earlier converted or prepaid in accordance herewith.
      All interest on this Note is due and payable on the Maturity Date.





2.
            Security.
                This Note is not collateralized but shall be deemed a full recourse
                Note.





3.  Attorneys’
      Fees .
      If the
      indebtedness represented by this Note or any part thereof is collected in
      bankruptcy, receivership or other judicial proceedings or if this Note is placed
      in the hands of attorneys for collection after default, the Company agrees
      to
      pay, in addition to the principal and interest payable hereunder, reasonable
      attorneys’ fees and costs incurred by Lender.





4.  Notices .
      Any
      notice, other communication or payment required or permitted hereunder shall
      be
      in writing and shall be deemed to have been given upon delivery if delivered
      in
      accordance with the terms of the Note.





5.  Waivers .
      The
      Company hereby waives presentment, demand for performance, notice of
      non-performance, protest, notice of protest and notice of dishonor. No delay
      on
      the part of Lender in exercising any right hereunder shall operate as a waiver
      of such right or any other right. This Note shall be construed in accordance
      with the laws of the State of Delaware, without regard to the conflicts of
      laws
      provisions thereof. Any lawsuit or litigation arising under, out of, in
      connection with, or in relation to this Agreement, any amendment thereof, or
      the
      breach thereof, shall be brought in the courts of Omaha, NE, which courts shall
      have exclusive jurisdiction over any such lawsuit or
      litigation.


-1-


6.  Assignment .
      This
      Note is not transferable by the Company, whether by sale, pledge or other
      disposition, without the prior written consent of Lender which consent may
      be
      withheld in Lender’s sole discretion, except that the Company may transfer this
      Note without such consent in connection with a merger or other similar
      transaction involving the Company.





7.  Law .
      This
      Note shall be governed by and interpreted in accordance with the laws of the
      State of Delaware.





IN
      WITNESS WHEREOF, Gabriel Technologies Corp. has caused this Promissory Note
      to
      be executed by its officer thereunto duly authorized.








**GABRIEL
      TECHNOLOGIES CORP.**








By:  /s/
      Keith R.
      Feilmeier


Name:  Keith
      R.
      Feilmeier


Title:  Chief
      Executive Officer