PITTSBURGH, PA (5-14-05) - A hopeless forecast of predicted thunderstorms, lightning and high winds prompted Miley Motorsports to cancel the weekly five division action event before race teams and fans headed for the Speedway Saturday.  A mid-week test and tune open practice session is scheduled for Wednesday, May 18 for all racing divisions.  The practice session will run from 6:00pm until dark.  Grandstand admission is free.  Racing action returns to the Monster Half Mile on Saturday May 21 with the running of the NAPA Twin 20's for the Late Models on Suburban Energy Night.  The Advance Auto Parts Limited Late Models, E-modifieds, Isiminger's Pennzoil Pure Stocks and Amateur Stocks will also be in action.  Gates open at 5:00pm with racing at 7:00pm.  For more information on the racing program at Pittsburgh's Pennsylvania Motor Speedway, call the Pittsburgh Business Office at 412-279-7223 or visit us on the internet at http://www.ppms.com/.