More tracks:
Make a backup copy of the file before proceeding. Use a text editor to edit the "championship.ini" file in the "RC Carsscript" folder. Look under the "Level Information" heading and change the "IsOpened (int)" value for the desired track to "1".
Cheaper tracks:
Make a backup copy of the file before proceeding. Use a text editor to edit the "championship.ini" file in the "RC Carsscript" folder. Look under the "Level Information" heading and change the "AccessCash (int)" value to "0". Any track can now be unlocked for free.
Free race fee:
Make a backup copy of the file before proceeding. Use a text editor to edit the "championship.ini" file in the "RC Carsscript" folder. Look under the "Level Information" heading and change the "RaceTariff (int)" value to "0". Any track can now be raced on for free.
Cheap upgrades:
Make a backup copy of the file before proceeding. Use a text editor to edit the "championship.ini" file in the "RC Carsscript" folder. Look under the "Upgrades" heading and change the "RaceTariff (int)" value to any desired low number.
Higher prize:
Make a backup copy of the file before proceeding. Use a text editor to edit the "championship.ini" file in the "RC Carsscript" folder. Look under the "Level Information" heading and change the "Place1 (int)", "Place2 (int)", or "Place3 (int)" value to the desired amount of winning money.