They're an outlier in the industry in terms of profit per car. But they don't actually get revenue from selling cars, their revenue comes from selling car loans. So they're making the additional margin on the financing. They are also famous for not turning down loan applications. So putting the pieces together, it seems like they are selling high risk loans at a healthy profit. Which brings up the question of who is buying those loans. They don't disclose the buyers, but claim that those buyers are not controlled by Carvana or its parent. Given the history of fraud, it's hard to take those claims at face value. The suspicion is that they are selling the loans to family-controlled shell companies and leveraging the stock to finance the scheme.
This is how many businesses operate. You have still not provided example of fraud or scam behavior.
If "many businesses" operate this way, then "many businesses" are committing fraud. You can't publicly claim to be selling loans to an unrelated company when in fact you control that company.
The latter has not been proven and the former is pretty normal for business. We will see how it plays out in the court and markets.
The second law of thermodynamics hasn't been proven either, but I'm fairly confident in it. ;-)
Fair enough, but courts tend to apply a slightly higher evidentiary standard than thermodynamics. ;)