OK here's my questions.... I've read in the EULA....

3.1You may install S1 or S2 on 2 computers for your own use or to race a friend on a Local Network.

(Beside the fact you start with 3 unlocks and a new one every weeks) I would like to know if you're able to unlock more than 2 copies at the same time for LAN racing or real-time spectating with differents camera view?

Also... I've seen in the game you have to option to put the lock back on an unlocked version... do this means doing so would give me an additional unlock?

Thanks!

I've got the answers by trying it myself.... you can run more than two copies on LAN no problems, and locking back an unlocked installation won't give you an additional unlock available.