Winners in the speed category will be determined on how fast the cars can run over a 20 meter track.
(Winners in the speed category; will be determined; on how fast the cars can run over a 20 meter track) (the cars; can run; over a 20 meter track)
Winners in the speed category the cars
will be determined can run
on how fast the cars can run over a 20 meter track
over a 20 meter track