$45 million dollars
To start a new game with fourty-five million dollars, first select an empty file and use the B button to enter the shop screen. Choose any of the three cars by pressing B. Then move the red selection box to the bottom center square. Then press B, Left, B, Left, B, Right, B, Right, B, B, B, Left, B, B, B, Right, B, Right, B, B. The red box should be one square right of where you put it it and you will have 45 million dollars.