When a parent hands you the car keys, they’re handing you their sleep that night too.

The keys are the small part. What goes with them is a few hours of somebody lying awake doing arithmetic about roads and weather and other drivers, which is not something they will usually describe to you. The nerves are not a judgment about your driving. They are the price of caring about where you are, and they get paid every time.

Text when you arrive and text when you are leaving, before being asked. Come back when you said and with the tank not empty. It costs you four seconds and it buys you a quieter household and, eventually, fewer conditions.