MAX: Our Quest for a DIY 100-MPG Car

Progress continues on MAX, the home-built, 100-mpg car (prospectively) that you’ll be able to make for $10,000.

Aerodynamic car body
Here’s the aerodynamic body in the works to further improve MAX’s gas mileage. Fiberglass parts are shown in red and sheet metal in silver. Ron Brown, a reader in Texas, submitted the clever roof design (in purple).