First, lets’ set the stage. Your at the car dealership and you have your eyes set on the shiny new car.  Well you have a car and you can't afford two payments so you are going to have to trade yours in or sell it on your own. 

Option number one trade (or otherwise give your car to the dealer) your car in.  The dealer is not going to make very much at all on the new vehicle you are going to buy, but if he can get your trade in at below wholesale price he can make a huge profit and if it is a older model vehicle with alot of miles he can take it to the auction and still make a nice profit.  Meanwhile you sitting in the show room, really wanting that new car, is not a good situation to be in if you want fair money for your trade. The dealership will use every tactic they can to give you minimal dollars for that trade.  It is just the nature of the business and more of a profit when the car resells.

Option number Two. Put the car in your front yard and try to sell the car yourself.  No exposure, limited amount of traffic, it will take to long to sell your auto.

Option number Three .  Let LuxurEautos sell your car for you on ebay.  Do a 7 day, with a best offer and buy it now auction.  You spend $79.95 and odds are in favor you will recieve what the auto dealership was going to give you for the car plus an additional $500 to $2000 extra that you could use as a down payment.  If it doesn't sell go right back up to the dealership and demand $500 more dollars for your trade in and they have a deal. You just made an additional $420.05 for trying.