Kia recently managed to win two motosports championships in the 2011 Continental Tire Sports Challenge, despite having very little experience in the racing arena. Since capturing the championship, Kia has decided to expand in the racing sector by creating two new turbocharged Kia Optima vehicles. The two vehicles will race in the Pirelli World Challenge Championships branded "World Challenge Optima SX(s)." They will compete in the Grand Touring Sport (GTS) class along with some…