A vehicle fire in New Fairfield caused explosions heard across the town last night.  New Fairfield Volunteer Fire Department responded to Cottontail Road shortly before 9:30pm and confirmed the cab of an oil truck fully involved.  The front tires blew out as they were overcome by fire and caused an explosion.  The flames were quickly extinguished to avoid the tank being compromised by the blaze.  The cause is under investigation by the New Fairfield Fire Marshall.  No injuries were reported.