What I want to know is where have all the 100+ mpg cars gone? As soon as they get reported they dissappear. I think the earliest I have heard of a 100+ mpg vehicle was back in the 70s and they pop up every so often but are quickly and mysteriously gone.
IMO its a big coverup. Big oil companies probably hold all these designs in sealed vaults after buying out or blackmailing the designers.
100 MPG Car