AutoCad 3D :: Transfer Different Surfaces To Same Plane

I'm making a car model on autocad 3d and I have to make all of its differents surfaces flatten on a same plane (similar to papercrafting). I must get the "real sizes and dimensions" of all rectangles and triangles that compounds my model.

This is about 20 differents planes defined by the lines of the car. The idea of this project is to make it possible to build the car from a printed paper.

Ive tried to use UCS making the "new xy" plan on the diferents surfaces but it would take like a day to make this in the whole model. I've also tried rotating the surfaces, but inst accurate enough.

The car is not yet solid; I just used the normal line commands. I'm plannig to use 3DFACE to create all the surfaces.

The only thing I could come up with was to define various UCS and then use 3DALIGN with a previous rectangle made on the WCS. But this is not very efficient.

Any way to "transfer" the differents surfaces to a same plane so that I can get the "real dimensions" (the real area, line sizes) of them? I'm not sure being clear enough..