Thank you very much everybody for your help.
We had to show our project today, it was really basic but it was a carGame.
the communication didn't work but they sai too that communication between two cars is not so basic.
One week before we had to finish it we were almost hopeless but with the goed hints we had a basicgame.
When I have more time I'll try to improve it and matbe I'll start with something easier .
See you later