These kids in Queens roll with 5000 watt amplifiers booming about 150 decibels of music on the streets of New York City. They make custom cabinets to house the systems, with more cabinets holding the car batteries to power the system. Most of the bikes have decorative lighting and some have DVD screens for viewing while riding, according to the Times article.
Read more at the New York Times. Thank you to the Longmonster.