The racing team driver, Scott Speed, took (scared the living daylights out of) passengers by hitching them a ride to where they needed to go in the high-horsepower race car. He also took this chance to show passengers the grunt of the V8 by demonstrating multiple sideways antics through the city streets. Some passengers were more frightened than others.
Only in America. Somehow the folks at Red Bull have managed to successfully promote its NASCAR racing team by sending a full-race NASCAR through the streets of Chicago - at speed - as a kind of taxi service for the public.
Video: Red Bull NASCAR driven as taxi in Chicago