Tesla’s Semi, as seen on the company’s website. (Tesla Image)

While Elon Musk plans to keep on (electric) truckin’, don’t expect him to pick up a hitchhiking Bill Gates.

The latest beef between the billionaires bubbled up on Twitter over the weekend when the Tesla CEO responded to the Microsoft co-founder’s recent take on the viability of electric semi trucks.

Responding to a tweet, Musk said Gates “has no clue” when it comes to electric trucks.

Musk was apparently worked up over an Aug. 24 GatesNotes blog post, in which Gates wrote about the great progress that’s been made on electric vehicles. Gates said batteries are getting cheaper and increased competition has created more choices for consumers. But even if the short-haul travel option further develops into a long-haul answer, EVs “will probably never be a practical solution for things like 18-wheelers, cargo ships, and passenger jets.”

Gates said the problem is that batteries are big and heavy and “the more weight you’re trying to move, the more batteries you need to power the vehicle. But the more batteries you use, the more weight you add — and the more power you need. … Electricity works when you need to cover short distances, but we need a different solution for heavy, long-haul vehicles.”

Musk and Tesla first revealed the Semi plan back in 2017. Business Insider said they’re two years behind schedule and now slated to be shipped to buyers in 2021.

Musk, who has also bumped Twitter heads with Amazon CEO Jeff Bezos, previously ripped Gates for his purchase of a Porsche Taycan as his first electric vehicle.

“My conversations with Gates have been underwhelming [to be honest],” Musk said in a tweet in February.

The criticism goes both ways, thanks to Musk’s controversial opinions on the coronavirus pandemic. Gates told CNBC that while Musk makes a “great electric car” and his “rockets work well,” a “high level of outrageous comments” are part of the Tesla CEO’s positioning.

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