In this variation, a fraudster feigns interest in a vehicle for sale on the Internet. The "buyer" explains that he represents a client who is interested in the car, but due to an earlier sale that fell through, he has a cashier's check made out for thousands more than the asking price.
The scammer requests that the victim cashes the check and refund the balance via wire transfer. If the seller agrees to the transaction, the fraudsters send the counterfeit cashier's check via express courier (typically from Nigeria). The victim takes the check to their bank, which makes the funds available immediately. Thinking the bank has cleared the check, the seller follows through on the transaction by wiring the balance to the buyer. Days later, the check bounces and the victim is responsible for the amount they wired to the fraudster, plus any fees associated with the bounced check.