And here is another school of thought, both my trucks are over 20 years old, one is 22, the other is 31. Now I know they don't quite burn as clean as a new vehicle does, but in the long run, I think it's somewhat better for the environment. My school of thought comes from the fact that both trucks environment production costs have long since expired, as well as the fact that both trucks have been driven over 200,000 miles. The older of the two has nearly 500,000 miles, on more than 90% of it's factory original equipment. Furthermore, most major components that would need to be replaced are remanufactured components, which is just another term for recycled.