Jane Kramer never imagined a life selling discount furniture and commuting between grocery stores and soccer fields via minivan. But when her father-in-law has a heart attack, she and her husband, Leon, trade in their glamorous New York life for a stint running the family business on Rockville Pike, a tributary of the suburban sprawl line extending outward from Washington, D.C. Kramer's Discount Furniture Depot sits away from several lanes of traffic,...