A driver escaped a car fire without injury.  Danbury firefighters responded to Ball Pond Road around 4 o'clock yesterday afternoon and found the car fully engulfed in flames.  Ball Pond Volunteer Fire Company out of New Fairfield also responded and quickly extinguished the blaze.  The state Department of Energy and Environmental Protection was called to the scene because of fluids that spilled from the vehicle and the runoff from knocking down the fire.  The  Danbury Fire Marshals Office is investigating the cause of the fire which is undetermined at this time.