well the hair thing is ridiculous, i like it, but i wouldn't mind if it looked completely stupid or turned him into the ugliest person in the world. and yeah, his talent should count most of all, but when i like someone/become a fan of someone i also need to like his/her personality and he always seemed humble and down-to-earth. his old(or maybe still) car just fit that and this new(or rental) car could easily be an indicator for his changing personality...does that sentence make sense at all?! what i mean is, i'm just scared he's gonna change into some arrogant stupid movie"star" and i'm sorry to say that, but that would really turn me away. he'd still be a great actor and his films may still be awesome (and i'd still watch them), but i couldn't really be a fan of his persona anymore.
but generally most of these websites just make such a big deal out of this because his hair was his trademark. and why even bother to think about the girls that only liked him because of his hair/his hotness, that won't stay forever anyways...
oh and he can drive whatever car he wants as long as he stays the same person...just to make it clear