https://inflationdata.com/articles/inflation-adjusted-prices...
Is the fuel cost per mile traveled 4 times higher than it was in 1981? No. Fuel prices adjusted for CPI are about identical with what they were in 1981 ($3.80/gallon): https://inflationdata.com/articles/inflation-adjusted-prices... And fuel efficiency has improved by about 40% in that time: https://www.epa.gov/automotive-trends/highlights-automotive-... (Even as vehicle reliability and safety and comfort have also gone up.)