I just ran across a website, buycarnotes.com. At first glance it appears to be a very good investment opportunity. But of course, I'm weary. I checked their claim to a BBB A+ rating and it seems legit. None of the scam-checker sites say anything bad about them. But still.....they're essentially offering a CD with a ridiculously high APY. Something doesn't feel right. Anyone have an opinion on this site?