In 2005, he won the Knoxville Nationals, the most prestigious sprint car race in the world. The same year, he won his ARCA debut at Talladega Superspeedway, in his second career start.
In 2006, he has driven the #47 and #46 truck for Morgan-Dollar Motorsports in the Craftsman Truck Series and also the #29 Chevy, which Morgan-Dollar was using under Bob Keselowski's team to make the field. Kinser was pulled from the ride towards the end of 2006, and spent the balance of the season competing in ARCA. He returned to the Trucks in 2007, driving the 47. He was originally stated to share ride with Ginn teammate Jesus Hernandez but he never did. After the Dale Earnhardt Inc. merger with Ginn racing he was replaced by Regan Smith.
In 2008, he was back running Sprint cars for Tony Stewart's prestigious team. He raced with them until the end of the 2009 World of Outlaws season.
In 2010 he drove for his dad Steve Kinser's team with Quaker State sponsorship under the number 11K.
For 2011 he drove the Casey’s General Store Maxim for the Parsons Motorsports team.
You can read more about Sebastien's racing career from Wikipedia: