Wal-Mart has unveiled a new prototype for a delivery truck it says will significantly reduce its delivery fleet's emissions. The Walmart Advanced Vehicle Experience, or WAVE, is the company's ...

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Wal-Mart is going to introduce four liquefied natural gas (LNG)-fueled Peterbilt 386 trucks into service at their distribution center in Apple Valley, California using Westport Innovations HPDI ...

Walmart is taking its grocery delivery program nationwide, as the company steps up its battle with e-commerce behemoth Amazon. The world's largest retailer said Wednesday that it's expanding ...