I think it is a both thing rather than an either-or thing. As long as roads continue to exist in any form, it seems crazy not to aim for efficiency. What is to

I think it is a both thing rather than an either-or thing. As long as roads continue to exist in any form, it seems crazy not to aim for efficiency. What is to be gained by passing up opportunities to make them efficient? So this is not a wrong metric, it is just that both metrics need to be taken into account.