At 11:05PM Cotuit Fire received a call for a motor vehicle vs motor cycle with a vehicle fire. Cotuit Fire responded with an ambulance and COMM responded with an engine out of the Marstons Mills Fire Station. Upon location first responders found a collision of a motor cycle and a golf cart, with the golf cart upside down and fully involved in fire. There was a total of three patients, two with life threatening injuries and a third with serious injuries. Med flight was requested but cancelled due to the helicopter arrival time and need for immediate treatment. All three were transported to Cape Cod Hospital. Two were being treated and awaiting helicopter transport to an off Cape Trauma center. Barnstable PD responded, provided assistance and is investigating.