If it was a 2 hour by foot, assuming an average of 3 mph walking, that's 6 miles away. For that to be a 5 minute trip by car you need to drive 72mph.

Reasonable on the interstate but as your driveway (nor the store entrance) are directly on an interstate, there has to be at least some stretch of slower driving bringing the average down, so the speed on the interstate section would have to be much higher to bring the overall average speed to 72 mph.

You're assuming a straight line and constant speeds. While this is naive for both situations the error will not average out.

Let me give a direct example. I pulled up google maps and what is a 10 minute car prediction (2.8 mi) is also a 54 minute walking estimation (2.7 mi) and a 17 minute bike estimation (2.8 mi). Also, 33-43 minutes by bus fwiw

> I pulled up google maps and what is a 10 minute car prediction (2.8 mi) is also a 54 minute walking estimation (2.7 mi)

That does change the numbers; 10 minutes by car being 54 minutes on foot sounds a lot more realistic than 5 minutes by car being 2 hours on foot.

Not to mention that all three of those states have major portions of the year where being outside that long can actually be dangerous. Either through dehydration and heat stroke (especially considering that on pavement temperature is higher) or through freezing temperatures (and potentially frozen over sidewalks).

Americans are so delicate. Frozen sidewalk oh my G-d! Tell that to Finns.