Excellent article. I took a slightly different approach to the model and looked at what a Transportation as a Service approach might cost the end consumer. I start this article with a story about what life might be like in the year 2040.

http://viodi.com/2014/06/02/googles-potential-end-game-transport-and-organize-the-worlds-people-not-just-information/

In my model, I assume a subscription model and that the per capita cost for 90% of the people would be less than $300 per month.