Sorry, but if you're renting out your Chrysler 300C at $550/day and it's booked (not just unavailable) for weeks at a time...
... that's not legitimate. Someone is laundering money, there. The best bit is if you're coordinating it, you don't even lose access to the vehicle, because there's no verification that an exchange of property took place.
"Sign up for this site. I'll give you $5,000 to put in your bank account. You're going to 'rent' my car, except I won't actually give you my car. In exchange, I'll give you a discount on your drugs for the next six months."
Drug addicts in the throes of withdrawal, or 'savvier'? Absolutely would go for such "deals" like this. And really, it's probably fairly low risk - the worst that is likely to happen is that Turo disables your account.