[Big Dave]

For the good of the country, we need the diesel. The difference in efficiency makes them a means of reducing our dependence on imported oil. If all our gas vehicles instantly became diesels, our fuel consumption would drop by 25-40%.

Another thought. There is some work being done on algal biodiesel and synthetic (Fischer-Tropsch) diesel/jet fuel. The gasoline made by F-T is only 80 octane. To use biodiesel you need a diesel.

The environmental regulations put in place in the US in 2007 have been all pain and no gain for US diesel owners. The fuel costs a buck a gallon more and now the vehicles have this goofy barrier filter and urea injection. That's not the way to win over the people to the diesel. These regs are the work of the devil.

The price differential is wearing on even hard-core diesel fans like me. My 25 MPG truck costs the same to fuel up as a 15 MPG gas pig.