 So the efficiency of a car is just unbelievable. So you can take it in big leaps and bounds. You can take like every, so usually about every 20 years, you would burn about two-thirds cleaner than a car two decades prior. So you use that cleaner. Cars in the 60s, the old muscle cars and stuff like that, they were just awful on efficiency. Always, you know, could smell raw fuel. Remember the old...