I suspect the recent spike in car prices is due to the pandemic. Over ten years the cost seems pretty much flat (even as cars have become more advanced). Also, cities that are booming will outpace the rest of the country for rent (and therefore grocery) costs. I think you need to look across many cities to get a reliable picture.
According to the CPI, the cost of living has only increased by 20% over the last ten years, which is just not believable.
1: https://www.cargurus.com/Cars/price-trends/