At the main menu, press Start on controller four. Then, highlight "Options", click and hold the Left Analog-stick and press A to display a cheat menu with "God Mode", "Dumb Enemies", "Easy Alarm", "Complete Crazy Deal", "One Million", and "50 Lives" options.
Use the Great Database and change into the head banker; his powers allow you to get money from more than one robot at once.
If the cops are after you and you cannot lose them, go to Rusty's scrap yard. When you land or park, the cops will give up looking for you.