There's a saying north of the 49th parallel that if something becomes popular in California, give it five years and it will be popular here, too.
From cars and movies to hula hoops and grunge music, Canadians historically have let their cousins to the south try out new ideas before embracing those ideas themselves. Americans set the pace, most Canadians believe. Canada? Well, sometimes Canada is just a little slow on the uptake.
Sometimes, but not always. Consider the food bus