Ed Posted: 10/7/2008 8:26am PDT OblioA it is 100% IMPOSSIBLE, even if you make them in CHINA, to make diesel-electric hybrids for $16,000. Even th4e gas-electric Prius clone Hunda Insight can't sell for less than $19,000, and if it were diesel, it would sell for at least $22k. Also, it is NOT true that a $40k sedan owner does not worry aboiut fuel economy, there are Lybrids that cost well over 100k!!! (lexus 460 hl) OblioA Posted: 10/6/2008 9:53pm PDT Anyone who can afford a $40,000 sedan doesn't really need to worry about saving gas money. So put a 50 mpg diesel-hybrid in a $16,000 car that the working class can afford! Ed Posted: 10/6/2008 3:55pm PDT Of course, a DIESEL Hybrid is the most efficient Hybrid possible, in an ideal world. But you can count on Volvo to butcher the job and produce an inferior POS as most of its current offerings (no wonder its Sept. sales were down a DISMAL 51.8%!!!) BUT, no matter who makes the diesel hybrid, it will be even more expensive than a gas-electric hybrid. SO it will be a tradeoff between a higher price and better MPG. I favor the diesel hybrid also because of the far superior durability and longevity of the diesel engine vs the gas one.