Checked with a pro, got a "No!"
Decided to ask a contact who actually runs a truck fleet, would he buy the Tesla truck? Surprisingly, he didn't have a problem with the short range, they run many "day cab" routes which are under 500 miles, but he said he wouldn't buy a truck with a central seat as it was dangerous. He explained that half his fleet's accidents are backing accidents, and the way they train their drivers is to back with the cab at an angle to the trailer, to the left (US), so they can see where the trailer wheels are. A central seat would make this impossible. He said to look on YouTube for "45-45 backing" to see what he meant. It seems Musk really didn't check with a trucking pro.