Slick looking design. I just have a couple of comments on the build/structure elements:
The interface between the panel supports and the body seems very difficult, and possibly a bit flimsy in the end. The way the supports line up, there's only one point where solid wood meets solid wood, and that one is directly in-line, meaning an "edge to edge" connection point (not very strong).
If I were to make a suggestion on the earlier design, it would be to make a cutout in the inner face piece, and incorporate as much of the panel support structure into the frame as is possible. Slots in the supports for the inner face piece could act as guides to create the curve, and the thinner sections would take the curve easier as well. The bottom could be finished with a narrow "kick" plate, up to the bottom of the supports. The later design looks like it would be nearly impossible for most to get a finish at anywhere near the quality of the rendering. It would take a lot of filling and sanding to make those kinds of transitions seamless (think custom car body modifications). And if one is going to go through all of that, the panel better not wiggle at all, as the fill material could crack or break out.
At some point, function has to take precedence over aesthetics. The coolest looking car ever isn't much use if it starts to go airborne at 50mph

. But with a few tweaks, I'm sure it could be easily buildable and very solid, while retaining most of the elements which give it the attractive appearance.