During the race countdown, keep your RPM gauge in the yellow. As soon as the count reaches 2, hold the brake. Then, as the 1 count begins to switch to Go, release the brake and and accelerate.
Unlock Net-Battle Car:
100 hours of gameplay will automatically unlock this vehicle.
Unlock Red Cat Car:
Winning an online race will unlock this car.
Unlock Pywackett Barchetta Car:
Use Hornet, Grasshopper, Falcon, and Lightning all in Single Race Mode to finish in any position on the 37 Speedway.
Thanks to Revolution readers A very weary Brian Gee!