Seven people have been confirmed dead in the plane crash that killed former NASCAR driver Greg Biffle on Thursday, December 18. Biffle, who was 55, his wife, Cristina, and two kids, daughter Emma and son Ryder, have all been confirmed dead. Family friend and NASCAR motorhome driver Craig Wadsworth died as well, along with pilot Dennis Dutton and his son, Jack. "We are all devastated by the loss of our loved ones," the victims' families said in a joint statement released Thursday afternoon. "This tragedy has left all of our families heartbroken beyond words.