People, not households, buy and use cars so that's a weird way to calculate. You're also not counting any work vehicles which are very numerous and often expens

People, not households, buy and use cars so that's a weird way to calculate. You're also not counting any work vehicles which are very numerous and often expensive vans or trucks. A quick search shows there were 260,350,938 registered highway vehicles in 2014. The truth is US auto fleet age is older than it has ever been so car sales are not abnormally high and could actually accelerate (assuming robots don't drive them all!). http://www.rita.dot.gov/bts/sites/rita.dot.gov.bts/files/publications/national_transportation_statistics/html/table_01_11.html http://www.rita.dot.gov/bts/sites/rita.dot.gov.bts/files/pub...