This custom Vespa scooter, built by Germany's Kings of Cruisin, adapts two themes from the car hot rod scene to bikes. With its steel body sanded free of paint, it's free to develop a patina of rust. And, the rear suspension has been replaced with an airbag, allowing it to ride so low during cruises that its body scrapes along the ground. All that'd be retarded on a 'Busa, but is totally badass on a Vespa.
This video shows a trial run of airbag inflation during the build. Hopefully it's not that violent while you're riding it.