As a car sales person you would definitely have invested money to purchase leads or even harvested the leads from your own website. You get your staff to contact the leads and convert them into sales for you. What do you do with the auto sales leads after that? You have invested time, effort and money in generating or purchasing these sales lead. Now that you are done with them can you use the same leads for another business?
Leads are important to every business, especially those that come from a verified source like you. Auto leads after conversion can still bring you some money, albeit in smaller quantities. Automobile buyers will need insurance for their vehicles and insurance sellers will need qualified leads. Why not try to sell insurance providers the lead in your possession? You would not only have generated some income from the leads but also have generated a new source of leads for yourselves. The insurance provider may sell you a list of theirs, which could lead to auto sales.
People buying vehicles rarely do so without any kind of financing. They only make a down payment and try to arrange the rest by way of car finance. This means you get another option to make some additional money. Auto finance companies also need leads and will be willing to pay you for the sales leads you have. As a car dealer, you would be good source of verified auto leads. You would have sold a car to a purchaser and even accepted a down payment. The purchaser needs finance for the vehicle, which you are getting arranged for them. That you are charging some money to do so from the financer is a matter that need not even be discussed.
After you have exhausted all sources of generating any income from the leads you have, you can just sell the leads to a lead management company for a small sum of money. They will not pay you a lot as you would be selling the leads in a generalized category. However you will still be able to generate some income out of them.