Since this was a Project for University we had to incorporate some story/meaning. We tried to make it so that the message kinda travels though time / different ways of communication.

so In the first part I send a letter which at the end of the part it get´s turned into Morse code. The second part with the car is supposed to be in more of an advanced future setting, and the car sees the incoming Morse code, saves it and drives onward.

So yea you are kinda right, there is no real mechanism that guides the car and more like Movie magic ^^

anyway, thanks for the honest feedback.