Tesla's extremely bad attitude about releasing repair manuals. Truck companies are used to being able to do a lot of their own maintenance and repairs. Tesla is unreasonably hostile to releasing repair information on their cars, and has massive backlogs on actually doing repairs themselves. Will trucking companies tolerate this? I think this may stifle adoption of the Tesla Semi. And I don't think Tesla's going to fix the problems, because they've had years to fix it, and they've shown a bad attitude.