You are not the first person to think this thought. It is standard greenhouse gas inventory methodology. Quoting from Amazon's GHG report: """Transportation ac

You are not the first person to think this thought. It is standard greenhouse gas inventory methodology. Quoting from Amazon's GHG report: """Transportation activities generate carbon emissions through the combustion of fossil fuels when vehicles are driven, the manufacturing of vehicles, and the supply chain for fuels. The emissions model for transportation covers emissions associated with “well-to-wheels” impacts (e.g.,extracting, refining, distributing, and consuming transportation fuels) and “vehicle” impacts (e.g., manufacturing, maintaining, and disposing of vehicles). These impacts are reported as emissions factors based on grams of CO₂e per kilometer basis."""