Do you need a car as a freshman?

My son is currently a freshman. He has a car with him because between dual enrollment and AP exams he entered with 66 credits so technically he is a junior. He filled his car with gas in college park the morning he moved into the dorms which was around August 23. I visited him December 1 and I put gas in the car because he had 1/4 of a tank. He then tells me he has never filled it up since August 23. So - you don’t need a car at all.