Check eBay. Sometimes promotional models are made for various cars and are sold by dealers. Don't know if they would have bothered with an Escort, but you never know...I have one on a bookshelf for a '62 Lincoln, so maybe...
__________________ "We are forces of chaos and anarchy. Everything they say we are we are, and we are very proud of ourselves!" -- Jefferson Airplane
Dick Naugle says: 1. Prepare food fresh. 2. Serve customers fast. 3. Keep place clean.
1. Scale models will not replicate the appropriate reynolds number if you scale the speed accordingly. You could either attempt to use a water tunnel to get a reynolds number that was close, and/or use trip wires the force the boundary layer to transition from laminar to turbulent at the correct location on the model.
2. In order to accurately model flow you'd also need to have a moving surface to place the car on, to account for the interaction between the moving car and the non-moving road surface.
As for models, maybe you could make your own wooden scale model like this: