You know what we hate? Hydraulic fracturing – otherwise known as "fracking" – the process by which natural gas is released from crevices deep underground through the pulverizing high-pressure injection of a toxic stew of chemicals. But this process has yielded a natural gas boom in the United States, and since burning compressed natural gas (CNG) is a relatively simple, and green-ish, fix for a gasoline-powered engine, adaptations are growing. For example, Mazda showed this dual-fuel (powered by CNG and/or gasoline) version of its delightful Mazda3 at the 2013 Tokyo auto show. CNG-powered cars are popular in the Middle East and South America. Perhaps they'll catch on here as well. (The sedan is shown, but a CNG hatch is expected as well.) [mazdausa.com]
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