Preowned Ford Trucks can be found in many used car dealer lots. You must be careful in the terms that you can get scammed. It is best to purchase this from a car dealer themselves.
To go in person to see and test drive an Audi A6 you should go to your local Audi dealership. The also have preowned vehicles there as well. Other places to find a preowned Audi A6 would be CarMax or Autotrader.
Preowned Hondas can be purchased from many different places. It may be easy to find a preowned Honda from a private owner. It would be just as easy to go to a local dealership to find many preowned vehicles, including Hondas.
One can find Ford trucks for sale at any local Ford dealership such as AutoNation Ford, Town East Ford, and Grapevine Ford. Used car lots may also have some for sale.
eBay.
Yes you can find listings online for private jets. You can also find listings for helicopters. Here is a listing for pre-owned Cessna. http://www.cessna.com/preowned-citation.html?gclid=CJ_Q95qf2KkCFQR3gwodC0G5Ng
There in fact are some Ford vans for sale. My advice would be to go to commercialtrucktrader.com. There you will find either used or new Ford vans for sale!
One could find a Ford F250 for sale at most Ford dealerships. If one is looking for a used Ford F250, one could use the Autotrader magazine or website.
One can find a Ford C-Max for sale at any Ford dealership, along with the physical site Carmax. One can also find information on this vehicle at the online site "Autotrader".
You can find Ford F150 for sale online at Autotrader , Cars and Truecars , just tick 'City' - Houston. Also you can find lot of car traders around your neighbourhood , who sale that car.
Your local used car lot should have great deals on the particular type of brand you are looking for. It is best to look for a certified preowned lot just in case.
If you go on Craigslist you may be able to find a second hard Ford Maverick for sale in the Houston area. If you go to the Ford showroom in Houston you will be able to find one brand new.