Extra money and weapons:
 Enter TOM LOUGHRY or TOD THORSON as names.
 
 
 More Cars: 
 Place first on all three tracks to gain the Fire Ant and 
 Samurai cars. 
 
 To get Racer X's Shooting Star, beat all tracks on 
 endurance. 
 
 To get the Demon car, beat the time trial with the 
 Shooting Star. 
 
 To get the ultimate GRX, take the Demon car into the 
 hidden tunnel shortcut, hit and remove all pillars,