Just park your car in Athens and go back to it, then drive to Salonika. It will not only cost more (in fact it will cost waaaaaayyyyyyy more) it will delay you because a. You cannot take it on the speed boats b.
You have to reserve space ahead of time, and space is NOT guaranteed. C. A ferry from Rodes to Salonika will take more time that a ferry from Rodes to Athens and then drive to Salonika.
I cant really gove you an answer,but what I can give you is a way to a solution, that is you have to find the anglde that you relate to or peaks your interest. A good paper is one that people get drawn into because it reaches them ln some way.As for me WW11 to me, I think of the holocaust and the effect it had on the survivors, their families and those who stood by and did nothing until it was too late.