A row of Google self-driving Lexuses at a Google event in Mountain View, Calif., in 2014. (Eric Risberg/Associated Press)

While I very much support the notion of automobile manufacturers moving from their current business model of building and selling vehicles to a services one in which consumers procure and use transportation as they need it, the Jan. 10 Business article “Sci-fi takes the wheel” missed a critical financial obstacle: the loss of municipal revenue generated by the elimination of parking tickets and moving violations.

Perhaps major cities will have to contract with General Motors and Toyota as well as Uber and Lyft to enable driverless cars and on-call ridership to offset the loss of revenue from our current traffic-citation-rooted economics. Who knows, maybe the elimination of all stop signs, traffic lights and crosswalk indicators (and their related installation and maintenance costs) will help.

Keith B. Segerson, South Riding