WARNING: Do NOT attempt this glitch if you have already attainted a gold cup on this test. This glitch will reset your best time to 16''00.
There is a nasty (or helpful, depending on your perspective of view) bug in Zero Test Class B Test 04 that will allow anyone to instantly get a Gold Cup. When you hit the jump plate, turn LEFT and land on the piece of land that has a green recovery zone (basically you jump and return to the starting point).
Now continue driving for a while, the game should congratulate you on getting the first place instead of letting the timer go on until you hit the finish line. Also, your time on the screen will be set to 0'00''00.
When you return to the screen where you can select different tests, you will be awarded a Gold Cup, but your time is reset to 16''00.
There are 2 ''hidden'' tracks in the game, and unlocking thme is all up to chance.
Play Gold Cup on Standard difficulty in Grand Prix mode, when you you reach the last race (race #5), you have a chance of getting either an Illusion track or a Red Canyon track, with the latter appearing more frequently. Play through Grand Prix a few times and you will acquire both tracks.
Likewise, play Gold Cup on Expert difficulty in Grand Prix mode a few times and you should acquire the version II (more difficult version) of both tracks.
When at the main screen (the screen where the F-Zero Logo appears), press R shoulder buttons to watch the in game demos.