You might be wondering how car rental companies end up making money. Well, they buy cars in reasonable amounts and then make money by selling them for more than they paid. Just like any owner who rents out his home for tourists on vacation, when car rental businesses rent these cars out, they are merely covering the operational expenses while waiting to resell the vehicles at a fair price. Sounds crazy but this is the way such businesses have been operating for decades. Moreover, yes, that's the reason you might still be able to rent a car at $6.50 a day in Las Vegas sometimes.