My dad has been telling the same story for ten years. He wants to take a trip around US national parks, sleeping in the back of the car, under the stars, which

My dad has been telling the same story for ten years. He wants to take a trip around US national parks, sleeping in the back of the car, under the stars, which is why his car needs a 500-mile range and must be fueled by gasoline. This conversation always comes up at family gatherings when he asks how I like my electric car. He's in his mid-80s with prostate problems. He has never taken the trip.