When I moved from Colorado to Vermont, I decided to go from Detroit, where I was visiting family, up through Toronto on the 401, then down through upstate New York.
Because I was moving, the Volvo wagon (a 1985 240 Turbo with a manual transmission and running 5w30 Mobil 1) was packed with stuff like a high chair, kids clothes, and other family items that would be needed when my family arrived in Vermont after me.
It took me a long time at the border.
A long time.
I had to convince the officer that: 1. I wasn't moving to Canada, 2. I was gainfully employed, 3. I wasn't carrying any weapons, and 4. That I wasn't crazy. At least 20-30 minutes talking with him. I don't think he wanted to search the car, because it would've taken hours, he just couldn't understand why I was going through Canada, but the route was just as fast, and a whole lot more interesting than the New York Thruway...I was completely honest (which helped) and a copy of my airline ID helped him believe that I wasn't trying to slip across the border and become a burden to the state.