Activating this trainer

If not state otherwise below, press F1 at main menu.
Listen for 'Trainer Activated'.
Press desired hotkey. All hotkeys can be changed on the trainer.

Trainer Options

# Currency 
     NumPad1: Mega Money On Buy
     NumPad2: Things Cost Nothing
     NumPad3: Buying Things Gives Money
     NumPad4: Car Improvements Do Not Add To Cap Costs

# Race 
     NumPad5: Super Cars
     NumPad6: Weak Opponents

# Car Upgrades 
     NumPad7: Unlimited Computational Fluid Dynamics Hours
     NumPad8: Unlimited Wind Tunnel Hours

# Gameplay 
     NumPad9: Game Speed

Notes

Mega Money On Buy:
NEW!  Toggle this on and leave all other Currency options OFF and when you BUY something you have 9,999,999,999 in money total.  Toggle back off when done.  Do not leave any Currency options on when LOAD from main menu or using NEXT to advance the Calendar.

Things Cost Nothing:
Toggle on and when you purchase things, or upgrade, or anything that would change your spendable money, the value does not change.  While this is ON, the Buying Things Gives Money option will not work.  Toggle back off when done.  Do not leave any Currency options on when LOAD from main menu or using NEXT to advance the Calendar.

Buying Things Gives Money:
Make sure Things Cost Nothing option is OFF.  While this is on, when you purchase something, you receive money instead.  The default amount is 50 million.  You can change the amount while the option is on.  Toggle back off when done.  Do not leave any Currency options on when LOAD from main menu or using NEXT to advance the Calendar.

Car Improvements Do Not Add To Cap Costs:
While this is on, any purchases that would increase the amount that is been used toward the cap will not increase.  Essentially you can continue to buy and won't approach the Cap any further.

Super Cars:
Your engine, tyres, fuel, etc, remain constant.  You can make your cars go aggressive and push for position without worry to pit, except for need to pit for Compound changes as required by race rules.  You can change the fuel amount that you have left while the option is on.

Weak Opponents:
Makes changes to opponent cars where they will have less fuel, their tyres are worn, etc.  Probably best to use this to force a pit stop, then toggle it back off.  This is likely to cause cars to be in situations where they may wreck or cannot finish or their tires are weak so they wreck.  So only use if you need your cars to get ahead for some reason to ensure winning the race.

Unlimited Computational Fluid Dynamics Hours:
Unlimited Wind Tunnel Hours:
If you have hours to burn, this will make it so that they don't decrease during upgrades.