Over the rod trucks use low rolling resistance high pressure skinny tires, proportionally a prius should probably have 2" wide tires... Like my Neighbors 80 year old 40 - 50 MPG Model A. His has a 3 spd tranny and a two speed rear end and if you look the thing over carefully it looks like it has a form of water injection from the radiator. For grins we ran it through DEQ, it had a little more CO than my BMW but everything else was fine.
Dave
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