Simplify the following text for a Grade 9 native English-speaking person.
Original: Ryan Joseph Newman ( born December 8 , 1977 in South Bend , Indiana ) is a driver in the NASCAR Sprint Cup Series . He drives the # 39 United States Army\/Tornados\/Haas Automation Chevrolet Impala for Stewart Haas Racing under crew chief Tony Gibson .
Simplified: Ryan Joseph Newman ( born December 8 , 1977 ) is an American racecar driver who drives the # 39 U.S. Army\/Haas Automation Chevrolet Impala for Stewart Haas Racing in the Nascar Sprint cup series .