Wipeout 64
To get the extra racing team, Pirhana 2, get any awards on all six time trial challenges. This team is maxed out in every catagory.
To get the Cyclone option, which makes each weapon twice as powerful, complete all six weapon challenges, again, it does not matter what award you get for each challenge. To turn off/on this option, go to Options on the main menu screen, then Game Config. turn Cyclone ON/OFF.
When the gas meter is around 3/4 full by the time the race starts, you get a turbo boost to start the race. Since the acceleration of the vehicles are different through the game, there is no set time of when to hit the gas. Usualy, pressing the gas between "One", and "Two" will work, but sometimes you need to practice the exact time. Good luck
Finish Wipeout 64's "Race" competition by getting at least "bronze", and you will be able to race on the hidden track, Velocitar.