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Our 1998 Saturn SL/1 is bigger 176 vs 106 in, heavier 2,355 vs 1,609 lbs and is EPA-rated at only a slightly less efficient 28/39 vs 33/41 (which it easily sustains in practical use so it is not some mythical mismeasurement). That is 10 year old technology.
Yeah we can't park it in a motorcycle space, but why isn't this brand new technology blowing the doors off our old car? I am seriously underwhelmed.