Vehicles
Be sure to read the readme.txt in the vehicles folder

Maya Importer Source
To compile the Maya Import dll, you will need to get the Maya 4.5 or the Maya 6.0 SDK from Alias. There is a note in the directory explaining where the files need to go. The project comes set up to compile a dll for Maya 4.5. If you want to compile a dll for Maya 6.0, instructions are in maya_main.cpp. For Maya 6.0, you will need Visual Studio 2003 or higher. The Maya 6.0 SDK does not work with Visual Studio 2002.

Linux Source
TTimo put together an official release for the Linux code. The code itself is the same as windows, but there are some different build options and an included SCons file.

Random Fixes
Including (but not limited to) compiling 'out the box' in Visual Studio 2003 and 2005