but i'm happy for him when he does well. >> in martinsville, beat him she did.s 25th. this was the first time a female driver has ever raced on the track. and "nightline" had one more first for her. the famous martinsville hot dog, that is supposed to bring good luck to drivers. >> you haven't had a hot dog yet, have you? >> oh, gosh. >> reporter: world famous hot dogs. >> and neither have i. >> let's do it together. here we go. i did your thing. i had half a hot dog. because i don't mean to to ruin my dinner, you know. >> cheers. >> it's all about the hot dog. nice. thanks to julie. coming up next, it's been called the most racist commercial in history. why pepsico is apologizing for that mountain dew ad. nservative. very logical thinker. (laughs) i'm telling you right now, the girl back at home would absolutely not have taken a zip line in the jungle. (screams) i'm really glad that girl stayed at home. vo: expedia helps 30 million travelers a month find what they're looking for. one traveler at a time. expedia. find yours. some changes you liked. and some you