[spectramax]

I slightly disagree: Go Karts are not used for daily use. When coverings and such are meant for functional use, such as to prevent dust build up or water ingress, they are required and not purely decorative.

We may be mixing Brutalism with functionalism though. Brutalist architects did stuff to just be ugly - just google some Architecture. Besides leaving concrete unpainted, they made expensive choices to "uglify" and push a particular type of aesthetics.