11. It requires automakers to meet specific standards of fuel efficiency in their vehicle fleets . 12. Regardless, setting mileage targets for vehicle fleets makes little sense. 13. The USPS is the operator of the largest civilian vehicle fleet in the world. 14. This allows companies to handle more orders with existing personnel and the existing vehicle fleet . 15. In 2005 the city's vehicle fleet had 6, 000 alternative fuel and 70 electric vehicles. 16. The large vehicle fleet cannot be visited at present. 17. Half of their 2, 153-vehicle fleet had over 100, 000 miles as of June 2013. 18. In 1973, the Authority replaced the entire 65-vehicle fleet with modern air-conditioned city transit coaches. 19. :See Indian Space Research Organisation # Launch vehicle fleet and the navbox at the bottom. 20. The State Police's vehicle fleet is primarily made up of Ford Expeditions and Chevrolet Tahoes.