Someone called 911 and it was an emergency. An elderly got a heart attack and he needs to be rush to the hospital or he will surely die. The ambulance was immediately discharge. The area was in heavy traffic and this will slow the ambulance, but no time must be wasted so you need to drive through all that traffic and try to avoid collision with other vehicles.
Drive the ambulance as fast as you can till you reach the destination. No time must be wasted since this game has a time limit. Collect some hearty objects on the road as this will help you reach the patient on time.