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eventually we will need hydrogen powered cars because, gasoline is slowly killing the environment and we will greatly appreciate if we swich.  

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hydrogen_car_development_engineerchemical_engineer__1.html  hydrogen_car_development_engineerchemical_engineer__.html  eventually_we_will_need_hydrogen__2.html  eventually_we_will_need_hydrogen__1.html  CHALLENGESOnly_a_few_models_are__.html