Re: Or as they say in London...
Re-think it a bit. Instead of a huge train carrying hundreds of people stopping every three minutes, have many tiny trains each carrying a few people who are all going to the same place. No need to accelerate and stop at every station on the journey. Dwell time is less important because the only people dwelling are those entering and leaving the system.
There are plenty of reasons for this project to be impractical but parts of it make more sense than some of us commentards realise.