thank you all and also to 4dogs for the wonderful advice. i think things will work out in the end. since yesterday i just drive him to the park to do his business because he wont poo or pee anywhere there are cars and lots of people so i am trying to make it a bit easier on him by driving him there and running a long with him. he seems happy in the park but the minute we get to the parking lot and he sees cars, he refuses to move (i think when i got mugged and he got lost, he may have come to see lots of cars (he was found by a highway net) so i can understand his fear.
i am hoping things will improve in a few weeks just in case we are taking him to france by the sea so he can calm down
i will keep you posted. thank you all!