Air-pollution laws, enforcement sprees and educational campaigns haven’t worked. What will it take to make drivers shut off their engines when they’re parked?

Cars are being kept in service longer as prices rise and quality improves, a trend accelerated by the coronavirus pandemic.

Of all the businesses to suffer from the global shortage of computer chips, dog washing — a low-tech affair involving soap, water and a dirty pet — ought to be near the bottom of the list.