Henry noted that Earnhardt 's enthusiasm for iRacing 's vision had helped sustain the company through four years of pre-release development , and thanked him for his help in making other drivers and fans aware of the service. iRacing currently organizes 12 online road-racing and oval-track series arranged in a graduated format that permits members to increase their driving skills as they proceed up the ladder . The NASCAR-sanctioned series will offer fans the opportunity to compete under the same organizational umbrella as the stars they watch compete each weekend , and sometimes to compete head-to-head with them in the virtual world .