LANDOVER, Md. – Pressing his energy policy goals, President Barack Obama on Friday prodded large companies to modernize their shipping fleets with more fuel efficient vehicles, improvements that he said would reduce U.S. dependency on foreign oil and cut down business overhead costs in the long term. The president ventured to suburban Maryland and toured a UPS shipping facility, where he examined all-electric as well as hybrid vehicles used by companies such as AT&T, Verizon and PepsiCo. Obama launched a new public-private partnership designed to help large commercial fleets cut back on their diesel and gasoline use.