Transportation is notoriously hidebound. The city of Detroit is a monument to that mindset. There is a lot of low hanging fruit in simply applying well known t

Transportation is notoriously hidebound. The city of Detroit is a monument to that mindset. There is a lot of low hanging fruit in simply applying well known techniques. For example, Toyota has made big advances by simply removing excess metal from their engines. GM could have beat them to it in the 1960s by hiring a few interns. There is also a great deal of efficiency to be gained by insulating buildings. A comprehensive approach to automating insulation retrofits would give tremendous savings but would not take more than $50M or so for the engineering.