At 0810 hours, Companies 12, 11, 32, 520 and 535 were dispatched to the area of Business Rt 222 (Allentown Pike) & Snyder Rd for a MVA with reports of entrapment. Crews responding were advised there was no entrapment however there were injuries and a working car fire. Crews on scene found a three car MVA, EMS was tending to the pt’s and there was a working car fire in the engine compartment extending into the passenger area. Engine 11-1 arrived and went in service stretching their trash line and made the fire attack. We were on scene until 0904 hours.