first of all, it has got to be exciting to be able to li ghtweight these trucks for racing purposes andalso increasing their fuel efficiency and making them cheaper to operate. you are really not only doing something better for speed nuts like myself, but for the country and world. >> absolutely. it is great for the environment. it is great for our customers in terms of fuel economy. great for cost of ownership. you make them lighter, you can make them for better heart -- hauling of cargo. >> if it is lighter, you can stop faster. >> we are and the business of mobility. moving a vehicle takes energy. r the vehicle, the less it takes to excel array. >> why is this happening now? has there been a technological advance that makes it possible? >> there was all kinds of technology becoming available in terms of materials. as we have demonstrated in the going to are going to watch it next year. we have created the entire body out of aluminum. the research we did on it, we can now get really structural, really tough, strong alloys. >> that was the issue. it is fine for airplane, but not safe i