Last week, Washington Gov. Jay Inslee—the guy who, while running for president two years ago, proposed a nationwide ban on sales of gas-powered cars by 2030—vetoed a statewide ban on gas-powered car sales by 2030.

The reason for the puzzling move, Inslee said in a statement, was a provision tucked into the legislation. The language said the 2030 target would take effect only if lawmakers created a program to charge drivers based on how far they drive each year.