They were not there last year, found this post from WC Lamb June 2017:
Walked around today....no Spyder can am. And oh. Harley is not doing dare to compare. There up top as a presence. But there demos ARE ON BEACH ROAD.
I called BRP a couple weeks ago to see if one could register early for a demo like a couple years ago, where you could set up a demo for a specific bike and time and date on line. I was told that Can-Am wouldn't be here this year!
BRP's budget for this year only allowed for either the Spyder homecoming in Quebec (last week) or Americade this week. They chose the homecoming for all their loyal riders as the more important of the two. Demo rides are available at local dealerships as the alternative.