I was driving up a hill on the highway with my father in the car with me when my car began to rattle slightly. I looked down and saw that my engine heat dial was somewhat higher than its standard setting, which was weird because I had just put engine coolant in a day or two prior. A second later, my dash said, "Severe engine failure. Pull over." At the same time, the smell of smoke wafted into the car, and soon after, smoke began billowing into the vehicle as well. We pulled to the side of the highway and got out to check what was happening with the engine. At this point, tons of smoke was coming out of the hood. I tried to lift the hood to inspect the engine, but I couldn't because the metal was too hot. I peered through the slit of the hood and saw flames. At this point, we began grabbing all of our belongings from the car and moving out of the way. A few minutes later, the fire became much larger and ended up jumping onto the side of the hill next to the highway. It then continued up the hill and spread to 8 acres before the fire department was able to halt it. I am not sure exactly what part of the engine failed, but I suspect it was the coolant. I had always had issues with the coolant leaking or running out fast, but figured nothing of it, as there was no recall and whenever the car was serviced nothing was said. I don't know where the car is but I do know the front half was completely destroyed by the fire. My dad's and my safety were at risk due to the car we were