You may have walked it, and if you are brave enough to have participated in Pittsburgh’s legendary and ambitious Dirty Dozen ride, you may have attempted to bike it.

Now, Audi and Red Bull team up to tackle the world’s steepest public street—Pittsburgh’s very own Canton Avenue in the city’s Beechview neighborhood. With a staggering 37% gradient, Canton clocks in as the steepest street on the planet that the public can drive along.

In cooperation with Red Bull, Audi brought together four world-class athletes and an Audi A4 to stage a quattro challenge in Pittsburgh. Among them are Audi works driver and DTM champion Mattias Ekström, freestyle skier Bene Mayr, professional snowboarder Heikki Sorsa and downhill mountain biker Aaron Gwin.

With action-packed tricks and stunts, the four elite sportsmen navigate the world’s steepest street, with plenty of scenic views of Pittsburgh’s topography adding drama to the exhilarating trek. To amp up the challenge, Canton Avenue was prepared with slippery surfaces such as snow, gravel, sand and mud.

The video even features cool black and white footage filmed by Pittsburgh-based photographer Matt Dayak of a Dirty Dozen event in progress.

Watch all of the exciting action along the Pittsburgh street for yourself and read more about the making of the commercial.

Jennifer has worked at the Mattress Factory, Brooklyn Museum of Art and Dahesh Museum of Art and is co-author of Pittsburgh Signs Project: 250 Signs of Western Pennsylvania. She also is co-coordinator of Handmade Arcade. Musically, she is in a band called The Garment District and is a founding member of Brooklyn's The Ladybug Transistor.