Steve Peterson (1950 – July 15, 2008) was an American technical director for NASCAR. He joined NASCAR in 1995 and worked with them up until his death. During his time he worked as a technical director and a safety adviser. He led to the improvement of safety barriers, neck and head restraints as well as seatbelts. Using only the above description and what you know about the world, "Steve Peterson worked for NASCAR until 2008" is definitely correct, incorrect, or inconclusive? 