On a cold morning, you slide into the driver's seat, insert the key, and turn the ignition. The car engine starts promptly, its steady hum indicating operation. The dashboard lights up, gauges settle into position, and the vehicle is ready to move.
You shift into gear and begin driving. The temperature indicator on the dashboard remains unchanged, staying in the lower, cold range. The car handles smoothly—accelerating through intersections, braking at lights, steering around corners—all without any shift in that indicator.
Time advances. Five minutes pass, then ten, as miles accumulate on familiar roads. The engine continues running, the car performs consistently, yet the temperature indicator holds steady in its initial spot.
At last, the needle begins to rise. It climbs steadily past the cold mark, reaching the center of the scale where normal operating temperature is shown.
This progression marks the latency in car engine warm-up: the process starts immediately upon ignition, but the dashboard indicator reveals it only after the passage of time.