I was told once it's better to drive to Niagara Falls, cross the border by car, get the TN there, drive back home, and fly to the US by plane a few days later.

I was told once it's better to drive to Niagara Falls, cross the border by car, get the TN there, drive back home, and fly to the US by plane a few days later. TNs are best requested when you don't have a plane to catch in an hour.