1; The man is driving along happily. He is whistling
2; The weather is getting foggy
3; It's difficult to see which direction to go
4; He turns on his headlights
5; He slows down from 55 miles an hour to 35 miles an hour for safety
6; He is trying hard to see
7; He keeps driving in the fog.
8; He sees a stop sign
9; There are other cars ahead in the fog.
10; Finally, the weather clears up
11; He's happy that the sun is shining
12; He arrives home. He's exhausted from the difficult drive.