Autotrader does not do this. lol Think about it, if you owned Autotrader, would it be in your best insterest to do something like this? No.

People need to wake up and learn from all the bad experiences that people go through on this very website. Do not buy something unless that something is right in front of you. And do not sell something until that something has been paid for 100%.

Besides buying things from companies, Ebay is a safer route to use to trust someone, but even then you can be scammed.