Contrary to what you may think, I was being thoughtful of this but did not think it required rehashing. You however, exactly reiterate my point, you didn't do any due diligence, just put certainly in italics. How about some facts instead?
Simply go to maps.google.com and search for Chicago, IL to New York, NY. Ok, 14 hours trip currently. Now, let's take a premise of 200 miles per hour. Now, tell me, can you travel 200mph anywhere in Chicago? Can you travel 200mph in Manhattan or anywhere close to it? No. Does your car contain enough gas to go 800 miles w/o stopping. Doubtful, especially at those speeds where your mpg is going to drop off drastically. Even assuming you could achieve 200mph sustained on the interstate you still have toll booths, traffic, weather, construction, curves, exits, onramps, and other real-world traffic scenarios to deal with. This is not a flying car, this car travels on the ground like the rest of them. At the absolute very best scenarios you are still looking at 5 hours to make the trip. I would argue a detailed scientific study on the feasibility of it would put the actual travel time closer to 7 hours even with a car that had a potential of 200mph.
Compare this to flying. The trip takes approximately 2 hours (please check any airline site so you can see for yourself). Let's be generous and add 1.5 hours on the before side and .5 hours on the after side to give us a rough approximation of total travel time from home to destination. That is a total of 4 hours.
The airplane wins hands down. Try thinking about the problem instead of going with assumptions.