LYNBROOK — Nassau County police are investigating an early Friday morning fire at the Anchor Audi dealership on Sunrise Highway. According to detectives, two men broke into the dealer and set off the alarm but returned an hour later to set a car on fire. Authorities said 50 firefighters responded to the blaze and there was no damage to other vehicles. Police said they are looking for the two suspects as well as another man that drove the getaway car.