FreeGameDev

So I am interested in starting a project with Red Eclipse and I am wondering if it is practical to create pilot-able vehicles in the engine? Does anyone have an knowledge on the subject or maybe suggestions?

It is for large maps like Dawn, and something I would like to see. however I suggest starting with a smaller modification to work on. I can help with it as I used to be on the Nexuiz Team, but am busy with my own mod, again starting very small.

So it is possible? Have there been any working examples?

Not yet, and I haven't seen anyting in the svn related to vehicles yet, but theoritically it is possible the same way Quake Rally was done. i.e. make use of Cube's equivalent to Movetype_slide.