100 mpg with off-the-shelf technology? Jack McCornack isn’t crazy, he just believes cars can have a lot better fuel economy than we’ve settled for historically. Enter MAX — the MOTHER EARTH NEWS entry in the Auto X Prize competition, a $10 million race for 100 mile-per-gallon alternative cars. This article details MAX’s origins and the early stages of its development. Originally published as "Here Comes the 100-mpg Car" August/September 2008 MOTHER EARTH NEWS.