What does the “hybrid” part of hybrid cars refer to?
Are hybrid cars really better for the environment than normal gas cars?
What are greenhouse gases? Which ones should we make less of?
How do engine-powered cars work?
Why do gas prices continue to go up and what will we do when it's all gone?
Why don't we have solar-powered cars?
How can plant material be turned into fuel that can power a car?
What causes air pollution and why is it bad?
Why is gas sometimes cheap and sometimes expensive?
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