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  • eco-friendly
  • self-driving car
  • instead of
  • interact
  • petrol
  • ahead
  • run on
  • traffic lights
  • happen to
  • hope
  • fumes
  • produce
  • communicate
  • decade
  • create
  • to be able to
  • predict
  • fear
  • scientist
  • air pollution
  • researcher
  • much less
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