Quote:
Originally Posted by MetroMPG
Another major reason it may be gone could be driveability issues/consumer acceptance...
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This is very true for many fuel/weight saving technologies. Six+ speed transmissions, direct injection engines, removal of overun clutches in auto transmissions, neural idle, ect, all make measurable improvements in economy. The fact of the matter is, fuel is still considered cheap to the average new car buyer. Until fuel economy becomes a real concern for most people, they will not accept anything that feels any different than what they are used to.