An article in the Supply Chain Digest (June 12, 2013) describes the use of Dimethyl Ether (DME) as a truck fuel by Volvo, producing 95% lower carbon emissions than diesel and 70% lower emissions than natural gas. Volvo claims that small units can convert natural gas and diesel to DME and thus production can be decentralized. Storage can be at room temperature, thus reducing costs. But given its 50% energy content compared to diesel, trucks will need twice the volume, in addition to the need for special lubrication. Should DME use be encouraged given its ability to ease adoption by gas stations ? Will the environmental benefit be outweighed by the maintenance costs and slow adoption ? Given its fledgling status, what should Federal, state and local authorities do to encourage adoption ?