Cash for Cars at AutoNation USA Houston. If you're looking to trade in your car at Gillman Honda Houston, use our Value Your Trade tool above to get the Kelley Blue Book value of your old vehicle.Have a car, truck, or SUV to sell in Houston? Simply fill out the online form, accept the offer, and schedule a pick-up or deliver to a local Houston drop-off site. Deciding whether or not to trade in your current car? Give our team at Greenway Mazda in Houston, TX a call before you make your next move. Driveo is a great way to sell your car in Houston. Just fill out our form to get a fast online quote that's good for thirty days. For more information about vehicle title transfers, please call us at (888) 368-4689 or (512) 465-3000, or send us an e-mail. Gillman Honda Houston is the best place to sell your car for cash and get the most value.