Jun 27, 2021 Freight efficiency is about moving more freight with less energy and less cost. Improving aerodynamics are relevant to all powertrain choices. Everything is connected. As a technologist,or futurist or engineer or whatever my job is today after nearly 40 years in industry, it never ceases to amaze me how everything seems to be interconnected. I have done research and writing about battery electric vehicles, fuel cell vehicles and other hybrid electric vehicles for some time, but my roots are firmly in the diesel world. All powertrain alternatives care about efficiency. Put simply, dollars-per-mile ($/mi) is a key performance indicator (KPI) that doesn’t care if your current engine runs on diesel, CNG, RNG, electricity, hydrogen, propane, or any of a hundred other permutations of energy. It’s a business metric that everyone wants to improve no matter what drivetrain the vehicle is running.