A private ambulance company can’t get the benefit of immunity given to emergency vehicles for a collision its medic allegedly caused.A divided 1st District Appellate Court on Friday found that because defendant Joshua M. Nicholas wasn’t transporting a patient in his Lifeline ambulance at the time he collided with plaintiff Roberto Hernandez, Nicholas and Lifeline are not immune from liability under state law.The state Emergency Medical Services System Act immunizes ambulatory agencies and their employees …