Big 3 go after diesel market

Recently passed energy legislation that mandates 40 percent fuel efficiency increases on automakers has them looking toward a technology that's existed for years -- diesel. General Motors Corp., Ford Motor Co. and Chrysler LLC have committed to a diesel option in the next generation of their light-duty pickups, which are the best-selling vehicles in each of their lineups. If all goes well and more consumers accept diesels as an option, the technology could expand beyond trucks.