After stopping the ambulance and dealing with any resistance, approach the back of the vehicle. A prompt will appear to open the doors. Once opened, a cutscene will play, and you'll successfully rescue the witness. Get them into your car and drive them to the designated safe house, marked on your GPS. Be mindful of any remaining police or gang members who might still be pursuing you. Drive carefully to avoid further damage to your vehicle and ensure the witness's safety. Delivering the witness to the safe house completes the mission, earning you a reward and advancing the storyline.
