This page describes how to download the robucar package and continue development with SVN.
Open up a terminal, navigate to a folder, usually in places like ~/fuerte_workspace/sandbox/
Issue this command
$ svn checkout --username=acm-mech https://svn.code.sf.net/p/acm-robucar/code/trunk acm-robucar
Enter the password for your account(in this case "acm-mech")
Then you should be able to have a folder under sandbox called acm-robucar, which includes two subfolders: robucar_acm and scripts.
Modify the code, make sure it works, then do a make clean under the project folder:
$ make clean
Upload to the SVN server
$ svn commit -m "your message"
If you have added some files or folders, add them to the svn system first
$ svn add FILES_TO_BE_ADDED
Then issue svn commit the same way.
Done.