I actually had this happen to me. The check was made out for $5,000.00 over the sales price of the car. The check was sent to me made out by Delta Airlines. (for those who dont know major airlines dont issue cashiers checks) After receiving the check I cancelled the transaction until after the check cleared. Come to find out the check was completly fraudulent.
The authorities said this type of bussines had calmed down for a while but is now on the rise more than ever.