Square Enix hold the copyright to "underlying computer code, text, audio and visual aspects of the game [Carmageddon]", and copyright laws they quote say I cannot "use, reproduce or distribute" those works.
Obviously this is all a bit silly given we're talking about a game thats 13 years old and you can't buy anymore, but still, its a cease-and-desist letter.
So, right now I've taken the download link down. I will be renaming the project to
Square Enix require me stop working on this project and not release it in whole, part or any form.
The computer code for OpenC1 is MY intellectual property. There is no part of my code which Square Enix has any control or copyright over. I absolutely assert my right to work on it and distribute it as I see fit.