Jeff Burton yog ib tug ntawm Nascar ntawm NBC cov kws tshuaj ntsuam xyuas thawj zaug txij li thaum nws so haujlwm puv sijhawm Nascar sib tw. ... [+] (Duab los ntawm Chris Graythen / Getty Images) Getty Images Nascar ntawm NBC tus kws tshuaj ntsuam Jeff Burt...