An articulated trainset is one that, from the passenger’s perspective, does’t have cars. From back to front, it’s just one long open tube. Maybe you’ve ridden a bus or light-rail train like this, or maybe you’ve taken a trip on one of Toronto’s recent Rocket Train subways, pictured above. This is apparently a likely future for New York’s subway system, according to a document released this month by the Metropolitan Transportation Authority outlining the system’s future needs. No doors, no escape.

It makes a lot of sense actually, boosting train capacity and allowing passengers to move to less crowded areas of the train. Maybe you’ve jumped on a subway car packed like sticks of dynamite only to peer into the next car and see open seats. And yet, all of those people suddenly in just one space together. It’s somehow a claustrophobic and agoraphobic’s nightmare at once: instead of a carload of people packed together, now it’s a nine car tunnel packed with people. So, dearest MTA, please leave at least some cars for those of us barely able to handle the New York of a single coach.

@everydayelk