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Among the advantages Nikola Motor Co. touted when it unveiled the industry’s first Class 8 electric truck running on a hydrogen fuel cell and battery pack was the ability to significantly reduce fleet maintenance expenses.

Truckload carrier U.S. Xpress Inc. formally announced its plans Dec. 8 to be an early adopter of the recently unveiled zero-emission, hydrogen-electric Class 8 Nikola One truck from Nikola Motor Co.

Chattanooga, Tennessee’s biggest trucking carrier is going electric, at least with some of its fleet, in the next three to five years.

A boom in electric vehicles made by the likes of Tesla Motors Inc. could erode as much as 10% of global gasoline demand by 2035, according to the oil industry consultant Wood Mackenzie Ltd.

SALT LAKE CITY — Nikola Motor Co. displayed its Nikola One hydrogen-electric Class 8 tractor at its headquarters here.

SALT LAKE CITY — Deliveries of the Nikola One hydrogen-electric Class 8 tractor produced by Nikola Motor Co. will begin in 2020, and the company has moved forward with plans to design a day cab, called the Nikola Two. People in trucking said the technology has the potential to change the industry.