Mate of mine was driving down from Scotland last night in his A4 when it rattled and ground to a stop. AA man reckons cambelt has gone and he can't be botehred to repair so is going to scrap or said I can have it for a song. Is it worth saving? It has cream leather and a sunroof but as far as I saw last night no aircon/climate, so not a great spec'd car. If it has done the belt is it likely to have stuffed the bottom end as well as the valves in the head?