A Real Time-Saver:

Do not finish the Boonta Classic unless you 
are in first place. If you are in a different 
place you obviously won't get the favorite 
(Sebulba), and you will have to sit through 
the un-bypassable ten-minute credits. So if 
you want Sebulba quit before you are finished 
if you are not in first. It's a real time-saver.