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dj,
I hope you are right... however its relatively new thing... one could say a whole generation behind Europe, where the 1973 oil crisis spurred on the devlopment of much low SFC engines...and now we have 40mpg as a norm...
Diesel is a strange thing.. agreed the smog is a real problem and particulates even worse.. only a few with effective filters... however its appears that the technology is evolving more rapidly than petrol engines at the moment.. so there is potential to improve.
What is needed is to make sure the majority of users are thinking in the same direction.. which in the Us would tend to be disproven by the sales of the F150 and SUV type vehicles...
Talking about fuel economy on a Porsche site is however slight ironic... even if we try to use less on a daily basis to use more having fun...
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