Geoff Whaling, wearing a violet suit fashioned of hemp, waxed rhapsodically about his 2017 BMW.

“It’s not just all-electric — it’s 14% hemp,” Whaling said, his hand caressing the driver’s-side fender of the jet-black i3. The electric vehicle’s shell is molded from hemp bioplastics, the dashboard is a hemp composite, striped with eucalyptus. The seat covers, floor mats, and sound insulation? All hemp. Even the battery baffle is hemp-based.

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