One thing that I part with many conservatives is transport. I personally think public transport hould be highly developed and people make use of it as much as possible. In theory, bus or railway has greater fuel efficiency - I don't support the thesis that fuel is going to be extinct next year but I don't see how 1 litre of petrol spent on moving a car with one driver to downtown could be justified when you can use it to generate electricity and upply it to an EMU with 1,200 people to the same destination.
An inefficient use of resources just for the sake of "greater mobility" runs rather hollow when you see good PT in East Asia with same degreeof mobility.
,,, and there's the weigh point - volume of population to make it cost efficient, stops planned en route relevant to business and attractions and convenient scheduling.