We have HOV lanes. Expensive HOV lanes. In California the Sepluveda Pass on the 405 will get a 1 Billion dollar upgrade to add one single carpool lane.
And yet, there is no advertisement of carpooling. Bush even made a slip of the tongue about carpooling on his 4th of July address that was re-spun by his administration later to clarify that the carpooling mentioned was only to be for the familes of soldiers in Iraq.
There is a serious leadership vacuum in this country.