I) Every day, Mr Taylor left his house in the suburbs at exactly 6 a.m., and today was no exception. II) He made this point of being punctual about his departure because he hated traffic. III) And in the city centre it was nearly always terrible after 7 a.m. IV) For several years, the pollution level from car fumes had been dangerously high in the centre. V) It was only after driving for half an hour through unexpectedly deserted streets that he reached work and suddenly realised it was a Sunday!