Press Start immediately after winning a race.
Create a Driver. Enter these Cheats as (case-sensitive) First and Last Names:
|Gimme Gimme||Unlock Everything|
|Walmart Money||10 million dollars|
|MeMyself AndI||Upgrade prestige|
|All ForOne||Upgrade Team prestige|
|Super Star||Upgrade Fan Level|
|The Intimidator||Dale Earnhardt Sr.|
|Race Dodge||All Dodge cars and Dodge Stadium track events|
|KeepCool SmellGreat||All Old Spice cars, track and create-a-car sponsor|
|MrClean AutoDry||All Mr. Clean cars, track, and create-a-car sponsor|
|Race Thetruck||UPS truck, track, and create-a-car sponsor|
|Walmart Exclusive||Walmart Driver and Track|
Drown in $$$$$:
If the $10 Million cheat just isn't enough for you, enter the change name screen and 're-enter' your name as Walmart Money to get $10 Million every time.
Thanks to Revolution reader putzerboo, ctcarney!