, I told him that I was gonna drive from Toronto to Chicago, and I left my car in Toronto Airport. Another important thing is that I was wearing my cashmere business suite that day, so I looked like a really professional guy . Remember , you should dress professionally, this is the trick when you go across borders. I have travelled extensively between US and Canada, US and Europe, I have never had any problems with customs. Because everytime I go across the border, I put on my most professional suits, and carry my laptop and the leather file folder, a professional impression is very important to those border guys, if you dress professionally and speak professionaly, sometimes they don't even bother to look at your passport carefully.