i would not give anyone bank details mate. i had somethin similar when i was selling a car paid for my car in full plus more to cover shipping in cheque etc i didnt even bother .
cash only i would say and if he saying he has someone to pick the car up well then they can sort the cash out. once the cars gone its gone
i would not trust a bankers draft either find out by your bank if there is a safe way of dealing with it. maybe they can send it to a holding account , when we use to send money to china we use to use western union, then make sure money is cleared and in your hands before sending car.
and yes it is a common con i have sold loads of cars through ebay and had quite a few of them messages and they where all similar and worded similar aswell.