Carbon fiber in cars

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Across
  1. 2. the base frame of a motor vehicle
  2. 4. a material that is combination of components
  3. 7. word for the atmosphere and outer space
  4. 8. the inside of a car
  5. 9. same as stiff and inflexible
Down
  1. 1. improves the car's aerodynamic properties
  2. 3. the state of being stable
  3. 4. functionally independent part of any system
  4. 5. gives smooth glossy finish
  5. 6. what is rusting