Final answer:
Without further context or reference to the specific narrative or text where this scenario is coming from, we cannot determine the answer to where Will's dad was driving home from when he saw the car by the side of the road.
Step-by-step explanation:
Unfortunately, without more context, it's impossible to give a definitive answer to where Will's dad was driving home from when he saw the car by the side of the road. The locations listed - New York City, Los Angeles, Chicago, Miami - are all major cities in the United States, but without knowing the source material, whether it's a novel, short story, or another form of narrative, it's not possible to determine the correct answer. This is because the scenario appears to be specific to a particular narrative or text.