Honda is supposed to be introducing their 2.2 liter diesel in 2009, in the Acura TSX of all cars, 50 states legal and without the urea injection system (yes, you heard that right) that cars like Mercedes will require to meet emissions standards. But in Europe you've been able to buy that engine for a while, in a brilliant Honda Civic, unlike any Honda Civic we get here in the United States. Of all the cars in the world I could have, this would be right there at the top of the list.
Looks like a Renault!
There's an amusing take on the car, from last year's Jalopnik (LINK), as well as an article on hypermiling this car and the massive Audi Q7 diesel in which they got 70mpg in the Honda and 35mpg in the Audi. Their point: all the bellyaching from US manufacturers (including Toyota but notably not Honda) that they don't have the technology to get such mileage is complete and utter bs (LINK).