I know it has been discussed before but I can't find anything about this by searching. Today on a country drive on a dead straight empty road my 04 may have got over 210kmh and while there it may have made a loud howling noise like blowing over the top of a bottle. It may have done this twice upon reaching the 210 mark and would have prbbably been coming from the right hand side of the bonnet area.. Can anyone tell me what it is?