Right my mate has a car for sale he gets a phone call from this guy could barley speak english claming he is irish

saying he wants the car & he will pay to get it shipped & he has never even seen the car paying the asking price of £4000...So This morning a bankers draft turned up in the post for Wait for it £8000

£4000 more than the asking price..claming that he has sent extra cash to secure the sale for the car asking to pay the extra cash back asap through western union......& mean we stay about 40 mins away from the sea cat thats direct to ireland so how thick does this cvnt think we are as it would take a few hours on a boat trip & we could meet him....Ive told him to hand it in to the local police staion with the guys details