AGCO CORP.

ASHOK LEYLAND

BOBCAT (MELROE) CO.

CNH GLOBAL N.V

CATERPILLAR INC.

CONSORCIO G GRUPO DINA, S.A. DE C.V.

DAEWOO GROUP

DEERE & CO.

DAIMLERCHRYSLER AG

FIAT S.P.A.

FORD MOTOR CO.

FREIGHTLINER LLC

GENERAL MOTORS CORP.

HYUNDAI CONSTRUCTION EQUIPMENT

INGERSOLL-RAND CO.

ISUZU MOTORS LTD.

JCB INC.

KOMATSU AMERICA INTERNATIONAL CO.

MACK TRUCKS INC

NAVISTAR INTERNATIONAL CORP.

OSHKOSH TRUCK CORP.

PACCAR INC

PETERBILT MOTORS CO.

SCANIA AB

SPARTAN MOTORS INC.

STERLING TRUCK CORP.

TEREX CORP.

TOYOTA MOTOR CORP.

VOLVO TRUCKS NORTH AMERICA INC

WESTERN STAR TRUCKS INC.

WINNEBAGO INDUSTRIES INC.