I wanted to start this topic to see how everyone is building up their money on GT4. Maybe we can help each other with this.
This is what I do. It takes less than 30 minutes (i'll try to time myself next time)
Bought a Used Mustang Cobra R for 35,000cr. Then spent about 100,000cr hopping it up with everything possible. The reason I went with the Mustang is because it was the only american muscle in the used lot at the time.
After almost spending 150,000 cr on the car itself. Now it's time to race
You need your Internation B license.
Go to the American Events and then to Stars and Stripes
This is 3 races total.
3 laps at Laguna Seca
3 laps at Seatle Circuit
4 laps at Infineon Raceway
Each Race win will get you 10,000cr
Win all three races and get a Chevrolet Camaro LM Race Car '01 which you can sell for 212,499.
So thats a total of 242,499 for 3 short races and less than 30 minutes of racing total.
Please post your recipe to getting money quick.
EDIT: Just timed myself and it took 19 minutes from start to finish! No breaks.