EXHIBIT 23 CONSENT OF INDEPENDENT PUBLIC ACCOUNTANTS As independent public accountants, we hereby consent to the use of our report included in this Form 8-K/A. It should be noted that we have not audited any financial statements of PST Vans, Inc. subsequent to December 31, 1997 or performed any audit procedures subsequent to the date of our report. /s/ ARTHUR ANDERSEN LLP Salt Lake City, Utah September 16, 1998