Chesapeake Energy

Chesapeake Energy, another major Marcellus player, is walking the industry's talk by making more use of natural gas vehicles in its fleet and building refueling centers at some of its operating locations.

The lack of refueling stations has been a deterrent to the use of natural gas vehicles in the past

Source: http://www.post-gazette.com/pg/10075/1042987-334.stm