Watch the USAC AMSOIL National Sprint Cars open the 2011 campaign LIVE tonight from Ocala (Fla.) Speedway! All the action will be streamed on the USAC Website. Just click on the USAC Live button and enjoy the "Bubba Army Sprint Nationals" in their debut appearance at Ocala. Friday and Saturday night's races are also slated for live feeds. Practice is expected to start at about 6:15 pm.