For some strange reason, I can't load the link, so here is the map, if you can't load the page. Not really helpful, but you can have a brief idea.
Exit 22 (2nd exit right after you cross 2nd narrow bridge, go along the Mt. Seymour Prkway, turn left when you hit Mt. Seymour Road. And then you just need to drive within the speed limit all the way up til you see all the Subaru.