Covenant Logistics, one of the largest trucking companies in the US with a fleet of over 2,600 tractors, completed a two-week evaluation of the Tesla Semi in California — including a loaded run over the notorious Grapevine pass on I-5.
The company’s VP of Sustainability and Innovation, Matt McLelland, said the driver “was amazed at the performance of the Tesla Semi and felt a level of confidence that was hard to match in a diesel truck.”
McLelland shared the results in a LinkedIn post on Sunday, revealing that Covenant had been testing the 500-mile long-range Tesla Semi with one of its larger customers in California for the past two weeks.
The evaluation culminated in one of the most demanding real-world tests you could design for any truck: a loaded run over the Tejon Pass on I-5 between Santa Clarita and the San Joaquin Valley — commonly known as “the Grapevine.”
The Grapevine test
