The numbers don't work out for 3 reasons. 1) they cost roughly 1.6 times the amount that was originally projected, 2) you can't get a federal tax credit, and 3) there is no autonomy.
there's basically no advantage to early reservations that I can see other than the following:
My remaining play is if the cost of autonomy goes up to over 20 or $30,000, and the price of the trucks come down, then I may be able to have some advantage there enough to make a case.