The Braking Puzzle

The new puzzle is short and (hopefully) clear. It goes like this:

A man dressed all in black is walking down a deserted country lane. Suddenly, a large black car without any lights on comes down the road. A few seconds before it would run over the walker, the car brakes with a screech and stops just in time. How does the driver, who is not a psychic, know that there is a man in the road?



And a short trick question (this week's special bonus):

You are running a race. You manage to overtake the runner who is in the second place. At which place are you now in the race?

Think, think:)