I have 3 concerns: 1)Environmental damage from extraction

Here in Massachusetts we've got CNG filling stations scattered about, so that's a start. But I'm strongly skeptical of two things: first, that natural gas prices are going to "collapse"-- in this region it's the predominant home heating fuel. When the electric utilities switched over to natural gas (because the plants are quicker and cheaper to build), many could no longer afford to heat their homes and home heating assistance funds ran out. Our bill runs over $900/month in the winter-- what will happen when I'm competing with automobiles for that fuel? Boone trumpets CNG-fueled transportation, but that will never be an option in the Boston area. The $14.9 billion Central Artery Project ("Big Dig") made sure of that: no CNG is allowed in any portion of this extensive tunnel system. The MBTA bought a fleet of CNG ("nabi") buses with big hoopla, and later was forced to quietly retire them all. Even if certain bus routes could avoid the tunnels, getting the buses back to maintenance or refueling yards became a logistical and traffic nightmare. Even before the tunnels, the MBTA had a problem-- refueling a diesel bus takes only a few minutes, while refueling a CNG bus took more than 20. If I had a CNG-powered vehicle, a trip to the airport would take 60-120 minutes longer than it does now.