Ah that's an interesting example. Despite the very narrow cars (just less than 2.5 metres - same as Line 3 and narrower than a Toronto streetcar and even a Montreal subway car), they've switched from perimeter seating to a lot of forward facing seating in new vehicles (and added walkways between the cars).
See the walkthrough in this video. Shame we won't be seeing these on an upgraded and extended Line 3.
Just in time for the hot spell, new SkyTrain cars have arrived - with improved air conditioning.
globalnews.ca