I think they are implying you might not feel ok with living in a car if you were not male. They are also pointing out you have to have a car to live in one, sin

I think they are implying you might not feel ok with living in a car if you were not male. They are also pointing out you have to have a car to live in one, since many people choose to not own cars, they don't have the option of living in their car because they do not own one to live in.