From rubble will spring renewal, and Richmond International Raceway is counting down the days. Construction has begun on a multimillion-dollar, 7,843-seat expansion project behind the Commonwealth Grandstand in Turn 1 of the three-quarter-mile track. The three-tiered grandstand, which is scheduled to be completed by March 31, 2007, will include a 700-seat club level, 2,246 mezzanine seats and 4,897 seats in the Commonwealth Tower in the new 18-story structure. "It's going to be very exciting," RIR President Doug Fritz said. "We have some really neat things coming down the road in the next couple of years. It's only going to get...