Continuity mistake: Ralph's brother hits him over the head with a bottle, which shatters. When Kimble runs past the same spot a few shots later, though, the broken glass is gone. (00:43:30)
Factual error: This is the only episode in which we see Kimble hotwire and steal a car. But he does it in seconds (two whole decades before MacGyver), with nothing but a foil cigarette package liner. Not likely. He'd need a screw driver or pocket knife, at the very least. (00:35:30)
Revealing mistake: The stunt man's face can be seen during Kimble's fight with Ralph outside the hospital. (00:44:00)
Answer: Production vehicle models aren't in sync with the calendar year. The '65 Mustang began production in March 1964 and first sold in April 1964, before it was "introduced" the following year. I don't know which model was seen in the episode, but the 2+2 fastback was sold in September 1964. The 1964 film "Goldfinger" uses a 1965 Mustang as part of Ford's product placement. Basically, in the 1930's, FDR ordered automakers to release vehicles in the fall of the preceding calendar year "as a means of facilitating regularization of employment in the industry." Now, automakers can release new models as early as Jan 2 of the preceding year.
Bishop73