Moreover, the agency's calculations assume no improvements in automotive fuel efficiency. Yet Congress in this session might enact a measure to raise average mileage from 25 to 35 miles per gallon by 2018. That one conservation measure, a 40 percent per mile improvement even before the tunnel will be complete, would extend Sound Transit's greenhouse gas pay-back period to the year 2088.

Further, public transit's contribution to fuel efficiency is exaggerated. ...

So his argument relates energy efficiency to CO2 emissions payback first, before he provides the numbers from the US DoE.


I've been accused of being a Marxist, yet while Harpo's my favourite, it's Groucho I'm always quoting. Odd, that.