Which TWO statements best describe the purpose of the time diaries in the author's
research?
A to find out what people do when they are
stuck in traffic
B to determine why Americans have such long
commutes
C to learn how people can improve their
productivity over time
D to predict how drivers will likely use their free
time in the future
E to assess how honest people are about how
they spend their time
F to identify categories of people who could
benefit from self-driving cars