The Christian Science Monitor has an interesting article on the potential for CNG (compressed natural gas):  "From his suburban home in a wooded neighborhood once known for its shipbuilding prowess, Mann is crafting automotive gadgets for a future that many believe could help solve the nation’s long-intractable energy woes – one fueled mostly by natural gas. During the past five years, Mann has converted more than 10 cars to run on compressed natural gas, in addition to gasoline, using a device he invented, the ‘CNG Fogger,’ which boosts the vehicles’ mileage. Commuters in the Boston area have snapped up his cars from Craigs­list as have CNG enthusiasts as far away as Wisconsin."

Of course, the article wouldn’t be complete without discussing environmental fears …