Yes: as above, this is complimentary in the United Arab Emirates for almost all first class flyers, except for those who booked their flight using miles/points and aren't also an Etihad Guest Gold or Platinum member.\
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Be aware that unlike in the years gone by, free chauffeur service is no longer offered for first class in any other city, except to passengers flying in The Residence, which is sold separately to first class and offered to destinations such as Sydney, London, New York, Paris and Seoul.