In that case, 120 mpg may not be doable, but 100 mpg would be.
Even still, for a full size car like the Accord, that's impressive. Now they just need to make a similarly sized car with the same engine, same frontal area, a .16-.18 drag coefficient, interior stripped of hundreds of pounds of useless fluff, and charge $15-20k for it. Acceleration, top speed, and FE would all improve a bit, while keeping the same or lower manufacting cost.
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