Originally Posted by PaulC

If the math is so irrefutable, why have most American and Asian auto manufacturers, including those who apparently haven't hit up Uncle Sam for an advance on their allowance, been so sluggish to introduce diesel automobiles into the U.S.? Aside from Mercedes and VW, who is currently selling diesel automobiles in the U.S.? Why are Ford, Nissan, Honda and Toyota currently offering gasoline hybrid passenger cars for U.S. consumption, not diesel-powered vehicles?