> He said you can rate transport by the number of passengers you can load per hour.

That's not really a fair metric. Taking rail requires me to take a bus at each end and increases my journey length considerably. I would be boosting the passenger per hour of 3 vehicles despite a worse experience?

I think metrics should capture the full cost and experience of the system. Having someone take transit for an 10% longer journey can be worthwhile, having someone take transit for 300% longer journey to save traffic might not be worthwhile if it reduces their labor output to society considerably.