Ford and Toyota are partnering to develop the next generation of hybrid technologies that will specifically bolster the fuel efficiency of pickup trucks and sport-utility vehicles. The new alliance is in response to recent federal mandates requiring automakers to boost fuel economy to 54.5 miles per gallon by 2025. Already the world’s two leading manufacturers of hybrid vehicles, Ford and Toyota now are challenged with expanding the technology to ensure that the largest vehicles can deliver better mileage. The two automakers also plan to work together on advanced telematics systems.