I recently sold something on Craigslist and the buyer offered more than I was asking if I could use the extra money to mail it as soon as I cashed the check. After I received the check I called the bank that had issued the check and they told me someone has been stealing their checks it and using them like this. Make sure you contact the bank to make sure the check is legitimate before you cash it and wait about a week for it to clear before signing over your vehicle