Has anyone ever heard of copart car auction websight?

My wife is thinking about buying a car with a salvaged title from this web sight, I have concerns about the safety of bidding and buying online... And was just wondering how it all works and if you think the web sight is safe, The car shes interested in is a 2008 scion xd and only needs the back hatch door replaced.... she was originally going to buy this car off craigslist from a small dealer but they sold it to this copart.com company, whatcha think?