This video shows my vision of the future that I had 32 years ago, and started working on full-time over 16 years ago.
Simply observing a pack of motorcycles on the freeway proves that narrow lanes are not required to increase lane capacity with narrow cars, however, what a great incentive it would be some time in the future, as demonstrated in the video.
http://smartercities.tumblr.com/post/95286536737/people-for-smarter-cities-new-solution-to-traffic#notes