I definitely intend to make demos in the future that apply it more directly to vehicles, but that's not going to be for a good while, as it's part of the overhaul of the course that is still lagging behind in Lesson 1, fighting against the continuous flow of new homework submissions and other responsibilities.

That said, looking at your work you understand it just fine. I imagine you could have picked a simpler example, or gotten into less overall detail (how much detail we work in is of course up to us - we're merely using the references as a source of information, and so if you consider any car from "big/major elements" and then whittle your way down into the smaller things, you don't have to think of it from the perspective of capturing the reference with perfect accuracy and complete detail). The structure you've got down thus far is pretty simple, but it looks like you've got the groundwork laid down for a lot more intricacy.

All that said, I'm seeing from where your construction is right now, is that you understand how to apply the approach.

So, I am actually going to mark this lesson, and the course as a whole, as complete. I know it's anticlimactic given that the drawing isn't finished (and you can certainly finish it yourself if you like, I'd love to see it when it's done), but in terms of what I was looking for, you have given me confidence that you do understand how to tackle this problem.

It really just comes down to time. One thing you could do when approaching this kind of thing in the future (if you ever do - you seem kind of traumatized, and might be taking it a little too personally, so to be clear what I asked of you here was even when done at its simplest possible level, a super challenging exercise worthy of a crowning achievement) is build up both the 3D construction and the orthographic plans in stages.

So that is to say, first you lay down the basic, boxy structure in the orthographic plans, and then you build it up in 3D. Then you add some secondary elements in the orthos, and add them to the 3D construction. This way you can avoid overcommitting, while still taking it to whatever level of detail you wish. This also has the benefit of giving us a greater sense of achievement overall, as it's not that the construction only comes together at the end.

That said, the fact that you're 20 hours in demonstrates a level of resilience that will serve you will in the future. I hope this last experience doesn't reflect too poorly on the overall experience you've had with this course! And of course, a big congratulations on completing it. You have most certainly earned it.