Harley Quinn chases 2 vehicles while on roller skates and with the aid of a friend on a motorcycle. She is hit by the cars, rolls around them, is propelled by her friend on the motorcycle, and fights the bad guys inside and outside the cars until they crash. The roller skating stunts were done with wire assistance for safety at higher speeds and a combination of safety and tow lines were used to keep the skater at the same pace as the vehicles