There are several techniques used for launching a drag race car, including the foot-brake start, the trans-brake start, and the two-step start. The foot-brake start involves holding the brake pedal down with one foot while revving the engine with the other foot. The trans-brake start involves using a specialized transmission brake to hold the car in place while revving the engine. The two-step start involves using a two-step rev limiter to control the launch RPM and prevent wheel spin. Each technique requires practice and skill to master.