I take the train to work since my job pays for it, but I’m not going to pretend like it’s faster than driving through traffic. If I drive, door to door takes 30 - 45 minutes depending on the time I leave. If I take public transportation, door to door it takes an hour and 15 minutes no matter what.
What if returning the carts is my usual practice, but there was a time crunch one time and I needed to save myself the extra 30 seconds?