Decided to look at it a bit more in detail and I have to say that it is quite nice, but there are still a few small things that can be made better.
The mesh itself is very good, and you don't really need to change it. The thing I will mention is that most 3d artists make their windows slightly recessed into the body to give slightly more depth.
2- UVW Mapping
Works fairly well for the most part, which is very good considering this part can be hard to get right, especially in the beginning.
On the front part though, stamping anywhere further back on that zone results in very bad jaggies. I would reccomend trying to redo the UVW Mapping to try to fix that problem. What I usually do is drag a vent around to see if everything works well.
The seams on the front part do not stamp. This is probably caused by incorrect material assignation in the .lua file.
You also have some stamping problems on the upper back corners of the car, where it makes the hole larger than it should.
I would recommend making the morph that slopes the hood a bit longer. Right now it just slopes the very tip of it.
Also, 3DS Max, being the #$@!$ program that it is, will modify your old weights when assigning new ones on certain vertices, creating things like what happens with your current "front lengthening" morph.
I am personally not a big fan of the technique used as it tends to be a PITA to make properly.
Yours works well, although the top morph tend to create a lot of weird creases in the side windows.
I understand what you were trying to do, but IMHO the results are not really visually appealing. I would suggest maybe making one bone that moves what the current two move, and one bone that would extend the door in a more smoother fashion like this.
The morphs work quite well for the most part, but there are a few things I would recommend that you try to rework a little.
The upper one creates a few bumps on the back pillar when morphing up.
The lower one creates two weird spikes that show up when morphing back and up.
I would also recommend that you make the lower back morph affect a little bit more of the trunk, so it has less of a tendency to create creases.
Works very well although some of the possible results are quite interesting
Hoping you will continue making more awesome models like this one because you show a lot of potential.