Traffic: Why We Drive the Way We Do (And What It Says About Us), by Tom Vanderbilt, gives the psychological insights to the mind of a driver. Most people tend to forget that a car is a heavy piece of machinery that can be very dangerous. There are many aspects that affect the way we drive. For instance, people often fall asleep at the wheel on the highways because they become bored of the straight path that they are navigating. The safest looking roads can sometimes be the most deadly, due to the fact that people will feel more comfortable and, therefore, less aware of their surroundings. The opposite can be said of a hazardous looking road; you are more likely to be on the lookout for danger and focus more on the road making it a safer driving environment. Vanderbilt further investigates these, and touches on many other subjects of the psychological behavior behind driving in his book.