For all of that, the mini van gained two car lengths and slowed down traffic overall to "merge in".
Crossed on a solid line too, which would be illegal in most states and provinces except for Ontario. I almost got hit by a semi yesterday where I was coming from an interchange where the lane continues, not a fade out merge, and the truck wanted to get in the lane as soon as possible seeing an open lane with fewer vehicles which was moving faster. I wish it was illegal here, because on a solid line where there is a merge or zipper lane coming from another road, its possible that one can NOT see traffic in the mirrors due to the angle AND traffic could be moving at a much faster speed. In Ontario, if there was an accident where one crossed a solid line, he or she may be charged at fault for the accident, but not charged for a dangerous lane change if there were NOT an accident.