Local and Out of State the maximum drive time is 10 hours per day with a total of 12 hours on duty. Out of State rates include a 150 mile radius distance from Dulles airport. If traveling over 150 miles from Dulles Airport additional distance fees, fuel, tolls and parking is applicable which is based on distance. Local rates include tolls and fuel. 12% service fee not included in rates. Modest chauffeur gratuity appreciated.