GRAND CANYON NATIONAL PARK, Ariz. (AP)- Grand Canyon National Park is getting $27.5 million in federal highway money to upgrade its aging fleet of shuttle buses, which help the more than 4 million annual visitors get around the huge park. The U.S. Department of Transportation’s Federal Highway Administration announced the grant at an event Thursday on the canyon’s south rim. The replacement project includes 30 new buses, 20 that run on compressed natural gas and 10 electric buses. Charging stations will be installed for the electric buses. The new buses are expected to reduce pollution and ease the overcrowding of vehicles at the park. The park has over 270 miles of paved and unpaved roads. The Grand Canyon project is one of seven to receive grants totaling $130.5 million under

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