How to get the best possible start to Gran Turismo 3.

Step One: Get all gold in the B License to get the free MX-5. (or just play normally until you can buy one)
Step Two: Get at least an IA License.
Step Three: Buy the cheapest racing tyres. (~10k cr.)
Step Four: Enter the Miata-Only Endurance Race. (takes about 71 mins)
Step Five: Repeat Step Four until you get the F1 car.
Step Six: Cheese almost every race in the game with an F1 car.