AGCO CORP.

ASHOK LEYLAND

BOBCAT CO.

CATERPILLAR INC.

CHRYSLER GROUP LLC

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

DEERE & CO.

DAIMLER AG

FIAT S.P.A.

FORD MOTOR CO.

GENERAL MOTORS CO.

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.

TEREX CORP.

TOYOTA MOTOR CORP.

VOLVO TRUCKS NORTH AMERICA INC

WESTERN STAR TRUCKS INC.

WINNEBAGO INDUSTRIES INC.