I have just found out off Facebook also, below is a copy of the text.
"Sad to report from our racing trip that our friend and teammate Sam Green was severely injured in an on track incident today at Virginia Motorsports Park. Sam was airlifted to VCU trauma center in Richmond Virginia. While the injuries are serious we believe Sam can make a full recovery. Your prayers and support for Sam Green and Bill Benton, are greatly appreciated."
Get Well Soon Sam