Plugging the proposals into a spreadsheet, he started listing the tools needed to produce each one: A CNC milling machine for an updated, open-source letterpress printer, a laser cutter for a sensor warning pilots of nearby planes.
That fuel economy comes from sophisticated electronic fuel and spark controls, and computerized automatic transmissions teamed up with a very sophisticated engine that was designed using computer-automated design, machined using CNC milling, and assembled by robots.