U.S. Rep. Jim Langevin is encouraging other agencies to follow the lead of the Rhode Island Public Transit Authority that recently bought 53 hybrid buses and upgraded 10 trolleys to run on a hybrid system.

Langevin touted the agency's investment during a speech on the floor of the U.S. House of Representatives Wednesday saying that the new fleet will save about 20 percent on fuel usage.

(READ AP story in Boston.com)