6/20/97 NOTICE: The Public Hearing scheduled for July 3, 1997, in Ann Arbor Michigan for the NPRM entitled "Control of Air Pollution From Motor Vehicles and New Motor Vehicle Engines; Increase of the Vehicle Mass for 3-Wheeled Motorcycles" (published in the Federal Register on June 3, 1997) has been cancelled because no group or individual has come forward to present oral testimony. Interested parties may still submit written comments through August 4, 1997. Contact: Frank Lamitola (313) 668-4479, lamitola.frank@epamail.epa.gov