<p>I don’t think it’s significantly shorter to go through Pittsburgh than through Canada. In fact, Google maps says it’s only only an additional 10 miles/12 minutes of driving time to go from Allentown to Flint through Canada, versus taking the Pennsylvania Turnpike. And that difference will be more than eaten up getting off the Turnpike, into Pittsburgh, and back onto the Turnpike. Lots of good reasons to prefer the Pittsburgh route, but distance/travel time isn’t one of them.</p>