It's 20 percent more aerodynamic and 4,000 pounds lighter than the current options.

Walmart, big box store turned neighborhood conqueror, has also been flexing its design muscles.

At a recent meeting on sustainability, the company unveiled the Walmart Advanced Vehicle Experience, a new concept truck that's 20 percent more aerodynamic than its current fleet. The WAVE features a micro-turbine power-train that can run on diesel, natural gas, biodiesel, and potentially new forms of fuels still in development. The trailer is also made almost exclusively with carbon fiber, which sheds around 4,000 pounds of body weight.

Walmart just began formally testing the WAVE, but there's no guarantee it'll actually make it onto the road.

Get a detailed tour in this video.

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