Vehicle was on & operating for 20 minutes and after traveling 1-2 miles all of the sudden smoke came from engine compartment. Pulled over immediately, and turned vehicle off when a full fledged fire began in the engine block on passenger side. Ran into gas station and used a fire extinguisher to get fire under control. 911/Fire Dept was contacted and hosed down hood, engine compartment. Analysis showed the source of the fire was from the passenger side hood accent light (factory installed) short circuited and was the origin of the fire.