How can we make more efficient internal combustion engines?
How do current internal combustion engines effect the environment?
What are some similarities between different kinds of engines (good design)?
What are some differences between different kinds of engines?
What are some alternative fuel sources?
What kinds of pollutants are current engines releasing into the atmosphere?
How can internal combustion engines be used in other ways/things?
What are different costs of different kinds/models of engines?
What materials/methods/models are cheapest to manufacture?
How are internal combustion engines limited?
How do current internal combustion engines effect the environment?
What are some similarities between different kinds of engines (good design)?
What are some differences between different kinds of engines?
What are some alternative fuel sources?
What kinds of pollutants are current engines releasing into the atmosphere?
How can internal combustion engines be used in other ways/things?
What are different costs of different kinds/models of engines?
What materials/methods/models are cheapest to manufacture?
How are internal combustion engines limited?