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autonomous – adj. independent and having the power to operate automatically without human involvement

capability - n. the ability of power to do something

pedestrian - n. a person who is walking in a city, along a road, etc.

logical – adj. using reason

revolutionary – adj. completely different from what was done before

greenhouse (gas) – n. relating to or caused by the warming of the Earth's atmosphere that is caused by air pollution

emission – n. the act of producing or sending out something (such as energy or gas) from a source