I should have posted my most recent reply.
Dear Sir, I am currently running your name with British authorities to establish your identity. So far you are not who you say you are. I am in contact with Interpol now and i will know what is up shortly. I will also begin to trace your emails. After 17 years with the FBI, i trust no one...
God help you if you are perpetrating a fraud.
These goofs are doing this day in and day out, but once in a while you have to play along. I think next i am going to tell him that i have a cashiers check but it is for more than the price of the car, so if he will send me the diference I will send him the check for more