This car appears throughout nearly the entire episode and the show is really about the car (as its owner's conscience).
I give it 5*****.
A must see for 1956 Ford Fans! Ep. # 5-14.



The car is a 1956 Ford Fairlane Club Sedan (2-door), model # 70C.

http://www.imcdb.org/movie_52520-The-Twilight-Zone.html