At 0828 hours, New Castle County Fireboard dispatch companies 23, 3, 6, 12, for an MVC with a vehicle on fire and multiple patients. Units from 23 arrived to find a four vehicle accident, with on vehicle on fire, and multiple injuries. Rescue 23's crew placed a line inservice, and with assistance from Engine 12, all fire was quickly extinguished. Additional 12 units, and ambulances from Good Will of New Castle and Volunteer Hose Company of Middletown also operated. The incident was placed under control in approximately 30 minutes.