in TDU1 the savegame contains your cdkey inside the data. I would imagine they have the same thing in TDU2 if the save game is not yours then i wouldnt worry but could you imagine 100+ people with that same account name logging in to the server?
They could ban everyone using that same account.
Just for your own safety if that is your save file do not share it because it does have your CD Key which makes contact with the server.
[Edited by NewPortBeachGuy, 2/21/2011 8:54:18 AM]
Okay, how do I find if the game is containing my CDKey?