Allegedly designed to alert the driver/rider any time the modified vehicle is emitting enough carbon monoxide to be harmful to the environment?which would be an awful lot if we had to guess?this original tailpipe trumpet certainly gives added credence to the term, engine note. Creators Allora & Calzadilla are most likely more interested in making a social statement than tuning (sorry) exhausts but the concept makes for, at the very least, a fascinating visual effect. The next attempt had better be a French horn.

+ Lisson Gallery