This is an unusual article in that it doesn't look at the strongest stations this guy has picked up, but rather the palaces to go to have a successful DX experience. And while it centres solely on areas of the U.S., Canada gets a lot of mentions as being the closest place that you can hear many signals coming across the border.

It isn't likely to get me going anywhere in my car, but if you're ever in any of the areas mentioned, it might be worth a band scan. I'm sure a SOWNY member like Saul could recommend some Canadian areas to head to to ensure you get a great "reception."

But here's the one from below the border. 

The Top 20 U.S. Locations to Scan the FM Dial