I thought the point of building concept cars was obvious, even for people without any knowledge of cars…
They're used to gauge public & press reaction to new styling, drivetrains, layouts, ergonomics, new technologies and construction methods, colour schemes, branding, etc. 
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What’s the point of BBC News?
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To stop car designers twiddling their thumbs or chewing their pencils, have people like Jeremy Clarkson intrested in such things go boggled eyed and say wow of course.
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