Edwina Economist is driving to an important meeting with her boss to discuss the prospects of her promotion. She is confident that she will get the promotion if she is punctual and relaxed. Unfortunately, she is running behind schedule. Edwina entertains the thought of speeding to 100km/h along a road with a limit of 80km/h – a road which she knows to have light traffic at this time of day and is monitored by speed cameras. This will get her to the meeting in just in time, and maximize her chance of promotion.