Reportedly, a total of 852 cars have brought forth a sour taste in the country between May 1, 2006 and November 5, 2007. More shocking, however, is that 13% of them (110, to be exact) arrived since the Canadian dollar reached parity with that of the U.S. (which, to my knowledge, was less than a month ago!)
Moral of the story: if you get excited about an amazing deal on a used car in the States, don't automatically assume that things are what they seem. Run the proper tests to ensure that it's not a lemon (http://www.carfax.com/) before you, or your customer, gets taken for a ride (or rather doesn't). Or better yet, buy your cars here, in our home and native land! (Of course, it goes without saying that you should run the appropriate back-checks either way).
As the saying goes, give us lemons, and we'll....wait a second, take them back! We don't want any of your lemonade, thank you very much.