Also a lot of buyers are more concerned about power, handling, etc. Even looks. Getting the maximum economy out of any car requires sacrifices vs. "the driving experience" and most people won't make that trade-off. So why bother serving that population (us)?
I pissed off everyone between Boston and Morristown, NJ. 55MPH unless downhill. But I also got 35.5MPG out of a V6 SUV that weighs two and a quarter tons.
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