The Iredell County Sheriff alleges that Greg Biffle's friends conspired to rob his bank accounts after his death in a plane crash four months ago. The alleged plot involves a Jan. 7 break-in at the family's North Carolina home where $30,000 in cash, NASCAR memorabilia, and two Glock handguns were stolen. The sheriff's office believes that this was part of a larger plan to steal more than $10,000.