A car rental company has opened up a branch in Los Angeles this week, Reuters reports.Hawaiian-based Bio-Beetle Eco Rental Cars opened the branch near Los Angeles International Airport with four Volkswagen Beetles, Jettas, Golfs and Passats, according to the company Web site. Weekly rental rates start at $199.The company is using 100 percent biodiesel, not a blend of regular diesel, according to the Web site. Biodiesel is a cleaner-burning diesel fuel, made from renewable vegetable sources such as mustard, rapeseed (aka canola), palm, olive, peanut, soybean, safflower, sunflower and castor oils.Biodiesel costs $3.45 a gallon. But the cars get between 30 and 45 miles per gallon, and as much as 800 miles per tank. Renters, however, will only be able to fill up locally at one biodiesel-capable gas station in nearby Culver City.