Here's the thing. There is no mystery that EM is a start up. DOE could and would have immediately disallowed the application if that were an absolute barrier. Instead, they have sat on it for almost a year.
The number of paid reservations converts to 290 million in first year sales IF they can get the doors open.
SO EM does have a definite revenue stream, a decent amount of cash (counting the SE money), and a nearly ready to manufacture product.
Nowhere's near as risky as earlier ventures. So it's probably about crunch time. Get those prototypes out on the road and crash tested, and DOE might just say OK.
Those reservations are a really key point. Even if only a percentage of those reservations come through (though I think it will be a very high percentage), those pre-orders may very well tip the scales into considering EM financially viable and able to repay the loan. Of course, they (probably) need the loan in the first place to then tap into the eventual revenue from those reservations, and certainly only a small percentage of that will be money they can use to do the repayment itself, but it's all a pretty good indication that if things get rolling, the repayment won't be an issue.
I think this still really hinges on the P5 blowing people away in testing. To get that pre-order revenue, first they have to conclusively demonstrate that this product is ready. P5 won't be the true final draft, but assuming it works and hits even in the ballpark of the targets, I'd say that will be the domino falling that starts the chain reaction.