Differences between 2WD rc car and 4WD rc car
2WD rc car means 2 wheels drive rc car, 4WD rc car means 4 wheel drive rc car.
2WD rc car launches by front two wheels or back two wheels, while 4WD rc car launches by all four wheels.
4WD rc car is more powerful and energetic than 2WD rc car during drive. But 2WD rc car performs much better than 4WD rc car in speeding up.