(53)Where it is impossible to identify the insurer of a vehicle, it should be provided that the ultimate debtor in respect of the damages to be paid to the injured party is the guarantee fund provided for this purpose situated in the Member State where the uninsured vehicle, the use of which has caused the accident, is normally based. Where it is impossible to identify the vehicle, it should be provided that the ultimate debtor is the guarantee fund provided for this purpose situated in the Member State in which the accident occurred.