Ah, the age old question of "who/what will be cool or touching or special in some way?" is hard to answer is often hard to answer 'til you get there, I'm sorry to have to say.
Last year, for instance, a bike racer showed up from overseas with his electric bike. He ran well but was kinda difficult to talk with 'cause he didn't have much English, so not many folks knew much about him. Well, in retrospect it turns out that he was from Ukraine and would have been a great subject for a story, what with the current goings-on in his home nation.
Lurk about on this Forum and see what catches your eye for subjects. There are quite a few Facebook groups and pages that will give you more racers and teams to examine for subjects.
Best idea: A feature-length production showcasing the extra-superb radio announcer would be great.