For these tests, GEFCO France and Gardien Transports have selected Altens PUR-XTL biodiesel. This alternative fuel is produced exclusively from waste materials, and can be used in regular diesel vehicles without any technical modifications. Compared to standard diesel, PUR-XTL promises to cut CO2 emissions by 85-90% and fine/ultrafine particles by up to 65% on short journeys with 500 km of autonomy.