We were driving and we heard a chime and nothing showed on the display panel. Then we went thru the displays and saw a message regarding the ACC something about manual something. Then we lost power. Since we were on the highway We turned the truck off and started it again to potentially reset. We drove a couple blocks to exit the highway and lost power again. The we got out of the vehicle and smelled smoke. We peaked under the hood and saw fire. We all got out, grabbed our stuff and then the fire spread and engulfed the truck. Total loss.