Exhibit 10.6 CTS June 2, 2005 Douglas W. Stotlar President and Chief Executive Officer CNF Inc. 3240 Hillview Avenue Palo Alto, CA 94304 Re: Severance Agreement dated as of March 1, 2005 Dear Doug: Reference is made to the Severance Agreement ("Severance Agreement") dated as of March 1, 2005 between you and Con-Way Transportation Services, Inc. ("CTS"). The purpose of this letter is to formally terminate the Severance Agreement, since you are no longer employed by CTS. Please acknowledge the termination of the Severance Agreement by signing on the line set forth below. Sincerely, /s/ Scott Engers Scott Engers Acknowledged and agreed this 2nd day of June, 2005. /s/ Douglas W. Stotlar _____________________________________ Douglas W. Stotlar