A 13-week vehicle-study was made by a renewable fuel retailer (Propel, Inc.) for a baking company (The Essential Baking Company), to assess the effect of fuel replacement from mineral (petro-) diesel to B99 (99% biodiesel blend) on its fleet of delivery vehicles. The results of the study (done in the United States) showed that biodiesel in its almost pure form (i.e., 99% blend) performed equally (if not, better) than regular petrodiesel. During the testing period, the test vehicles (of different models, route types, and mileage driven) traveled about 37,000 miles on 2,500 gallons of B99 biodiesel. The vehicles ran more smoothly, without any mechanical issues. There were also no cold weather problems encountered. Some drivers reported that their vehicles ran more quietly on the B99 blend compared to regular petrodiesel. Using an “integrated carbon emission reduction tracking platform” which automatically tracks gallons and calculates the fleet’s reduction in carbon dioxide (and other pollutant) emissions, the 13-week study showed that B99-powered vehicles had: (1) a reduction in carbon dioxide emissions by 43,000 pounds, (2) a displacement of 1,553 gallons of petroleum oil, (3) a 78% reduction in particulate matter emissions, (4) a 60% to 80% reduction in air toxins emissions, and (5) a 100% reduction in the emissions of sulfur compounds..