2. Willie Nelson

Willie Nelson's BioWillie biodiesel fuel, which is already sold in Texas, Oklahoma, Mississippi, Louisiana, California and Tennessee, will add a key location when Willie's Place at Carl's Corner, Texas, opens this summer. The truck stop, built on the site of the first outlet to carry BioWillie, is located just off busy truck route I-35, which runs from the Mexican to the Canadian border. Billed as the biggest green truck stop in the United States, the facility will include 13 islands and 26 pumps, and all fuel sold there will have some percentage of biofuel, ranging from 5% to 85%. The facility will feature two restaurants, a saloon, gift shop, a 750-seat performance hall and an XM Satellite Radio studio. Nelson, who does an XM radio show every Wednesday with legendary trucking DJ Bill Mack, says biodiesel is catching on with truckers. "I talk to all the truckers going up and down the highway, and they tell me they use it, they like it, it's good for the engines and they get good gas mileage," he says. "Truckers have been the ones who have spread the word about biodiesel as much as anybody." –Ken Tucker