Track 3 shortcut:
About half way around the course there is a barrier
guiding your car to the left. Ignore it and drive
through the wall into an underground passage.
Track 4 shortcut:
Approximately a quarter of the way around the
track is a waterfall, off which you can jump. This
waterfall has a rock on top of it. Line yourself up
just to the right of the rock, and aim slightly towards
the right. You will jump just to the right of the
opposite waterfall into a storm drain.
Track 7 shortcut:
There is an old train track at the beginning of the race.
Race along this fast enough and jump from section to
section, and cut off part of the track.