We already are, slowly but surely: https://www.rita.dot.gov/bts/sites/rita.dot.gov.bts/files/publications/national_transportation_statistics/html/table_04_23.h

We already are, slowly but surely: https://www.rita.dot.gov/bts/sites/rita.dot.gov.bts/files/publications/national_transportation_statistics/html/table_04_23.html https://www.rita.dot.gov/bts/sites/rita.dot.gov.bts/files/pu... You can argue that you want that rate of improvement increased, but progress is being made.