If you spent many, many hours racing and feel proud of result you did you very well might want to make this memorable event eternal.
Play through replay, place key frames to swap cameras and views through out. If to follow a specific car or the leaders etc.
And swap lenses on cameras to create a field of view that suites.
I stumbled on RaceRoom and what you can do there, think it might be popular feature to share a race, maybe among friends you raced with, maybe just a public event.
If you cannot save endless replays you can at least make a movie from it before replacing it with something else.