You drive past their ruins every morning.
The lesson was on the trade route
Ibn Kathir explains the site was on a well-travelled route, the highway between Arabia and Syria, close to the Dead Sea. The people of Makkah passed it on their trade journeys. The lesson was not hidden. It was on their commute.
The hospital you drive past. The cemetery on the way to work. The friend's empty chair at the family dinner. Reminders are already in your route. You only have to stop treating them as background.
I would reflect more if I came across something that made me think.
Allah has already put signs on my daily path. I just pass them without reading.
On your next commute, notice one thing that reminds you of death or of Allah. Pause on it for a breath.