In free walk mode, approach a drink vending machine and press X to get 1 gold. Repeat this as many times as desired. Start a new game and build a vending machine. When you want cash, go in freewalk mode and go up to the vending machine and press X. You will get 1 gold. Repeat this as many times as desired.
Invisible Tracks
Go to the menu and select OPTIONS. Then select TRACK COLOR 2. Then put EVERYTHING at 0, and when you hop off menu your track will be invisible!