That is a work in progress (the linked article is 3 months old), and the founders of Edison have reported progress in their talks with the federal government. To the point where they are able to deliver their first customer truck in the very near future.
The issue isn't that their hybrid truck design is specifically against regulations, and more that their approach isn't something that the regulations had a permissible category for. (There isn't a specific regulation that directly permits their type of diesel-electric hybrid truck using the type of generators they are using, so they don't fit into a pre-approved definition under the existing law)
It's a holdover from when the company was ground breaking and artistic.
The current era of dogshit remakes is new and horrible.
Thats a pretty typical for any innovative founder led company.
Once the founder dies or retires, and the people who learned directly from that founder are no longer in charge, the drive for max_profits becomes the only goal for the company.
Enshittification starts rapidly accelerating until the company finally craters, gets bought out by a private equity fund, and then gets hollowed out for the last squeeze of value until the empty corpse is left smoldering in a dumpster behind the bankruptcy court.
When you're taking pictures of nazis and trying not to have them attack you, taking those pictures from a distance and in a discrete manner can lead to less than studio quality photography.
Mutually assured destruction of Republican factions?
Pass the popcorn.